A decision and three sets information numbered I, II and III are given
 If the decision can be made using any one of the three sets of information select A.
 If the decision can be made using sets I and II together select B.
 If the decision can be made using sets I and III together select C.
 If the decision can be made using sets II and III together select D.
 If the decision can be made using sets I , II and III together select B.

Decision: Forty percent of students in this class attend tuition classes in Mathematics.
I. 25% of students in the class do not go for tuition
II. 15% of students in the class attend tuition classes in more than one subject including Mathematics.
III. 25% of students in the class attend only tuition classes in Mathematics.