question_answer

Assertion : In cold storages ammonia is used as refrigerant while in domestic refrigerators chlorofluorocarbon (CFC) is used.                            Reason (R): Ammonia can be liquefied at low pressure and high temperatures.

A)  If both A and R are true and R is the correct explanation of A              

B)  If both A and R are true but R is not the correct explanation of A           

C)  If A is true but R is false                                                     

D)  If both A and R are false                                                  

E)  None of these