What is the value of ‘a’?

I. Ratio of a and b is 3 : 5, where b is positive.

II. Ratio of 2a and b is 10 12 , where a is positive.

A

The question can be answered with the help of any one statement alone but not by the other statement.

B

The question can be answered with the help of either of the statements taken individually.

C

The question can be answered with the help of both statements together.

D

The question cannot be answered even with the help of both statements together.