In this question a few conclusions are drawn from two or more given statements. It is based on deductive reasoning rather than inductive reasoning. You have to consider the given statements to be true, even if they are different from established facts and accordingly choose the right answer.
Statements:  I) Some fruits are mangoes.   II) All mangoes are grapes.  III) No grapes are apples

Conclusions: 

I) All fruits are apples  II) No mango is an apple

Only II follow

Conclusions: 

I) All fruits are apples :- Not followed

 II) No mango is an apple :- followed  

Ans :- Only II follow