pyq/2018/csat/77

If x - y = 8, then which of the following must be true?

1. Both x and y must be positive for any value of x and y.

2. If x is positive, y must be negative for any value of x and y.

3. If x is negative, y must be positive for any value of x and y.

Select the correct answer using the code given below.

(A) 1 only

(B) 2 only

(C) Both 1 and 2

(D) Neither 1 nor 2 nor 3