|A) If the data in statement I alone are sufficient to answer the question i
|B) If the data in statement II alone are sufficient answer the question
|C) If the data either in I or II alone are sufficient to answer the question;
|D) If the data in both the statements together are needed.
From both the given statements, we find that the number of cards sold this year (2935 x 1.2) = 3522.
S0. both I and II together are required.