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                              Q:
                           
                           
                                                      | A) Arithmetic and Logical unit and Register | B) Arithmetic and Logical unit, Register and Control unit | 
| C) System unit and Memory | D) Hard disk and Control unit | 
                              Answer:   B) Arithmetic and Logical unit, Register and Control unit
                              
                                                            
                              
Explanation:
                               
                           
                           Explanation:
 
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