Key elements in the procurement management plan are enumerated in this PMBOK section. [12.1.3.1]

There is not necessarily a relationship between projects in a portfolio. Answer D is actually one of the goals of PROGRAM management. PMBOK Guide [1.4]

Let their investments be Rs. x for 12 months, Rs. y for 8 months and Rs. z for 6 months respectively.

Then, 12x : 8y : 6z = 4 : 6 : 8

Now, 12x/8y = 4/6   <=>   9x=4y   <=>   y=9x/4

And, 12x/6z = 4/8   <=>   4x=z     <=>    z=4x

Therefore, x : y: z  =  x : 9x/4: 4x  =  4 : 9 : 16

Why Are You Looking For A New Job?

Purpose - This question is asked to get some insights into your personality and your relationship with your last job, colleagues and employer. So you should be careful while answering this question.

1. Never bad-mouth your former employers.
Why? It is very simple as the interviewer will envision that you will bad-mouth them when you decide to leave, and nobody wants bad rumors about themselves or their company.

2. Never bad-mouth your previous co-workers.
Why? This world is too small, your co-workers could be a friend, relative of the interviewer.

3. Never bad-mouth about the responsibilities and tasks you performed at your previous job.
Why? Thinking that the new employer would give you great responsibilities and tasks and if you give a hate speech on the previous job responsibilities and activities and to your surprise if your interviewer is thinking about similar tasks for this position, you have already given a reason to quit the new job which you have not yet got. So guess, the chances of you getting the job is Nil.

Keep the answer short and try not to disclose too much. A straight answer is best and as stated above avoid negative statements about yourself, your work, or your ability to get along with others.

E.g.
My organization was forced to downsize.

Our department was eliminated due to corporate restructuring.

I am looking for a bigger challenge and to grow my career.

I am relocating to this area due to family ( Marriage, Kids Education etc...)

I received degree and want to utilize my new skills in this new position.

I am interested in a job with more responsibility and challenges.

I am seeking a position with a stable company with room for growth and opportunity for advancement.