Direction to solve:

Each of the questions given below consists of three statements, numbered I, II and II respectively. Please read the question and the statements carefully and decide which of the statement(s) is/are necessary to answer the question.


In how many years will a sum of money put at simple interest treble itself ?

I. The interest earned in $4$ years is half the sum.

II. The rate of interest is $12\frac{1}{2}\%$

III. The sum doubles itself in $8$ years at simple interest.

A) Any one of the three

B) Any two of the three

C) All I, II and III

D) II and III only

E) I and II only