Is `x-y gt 0` ?
I. `x gt y`
II. `x^(2) gt y^(2)`

Options

A. If statement (I) alone is sufficient to answer the question.
B. If statement (II) alone is sufficient to answer the question.
C. If either (I) or (II) alone is sufficient to answer the question.
D. If both statements (I) and (II) taken together are sufficient to answer the question.

Answer

A

Explanation

In this question, statement I alone is sufficient to answer the question
Statement I can be rewritten as `x- y gt 0`.
But statement II is not sufficient.
`x^(2)` is greater than `y^(2)`, but x may or may not be greater than y (For example, x might be -8 and y might be 2)
Therefore, the correct answer is choice (a)