GRE Question of the Day (September 27th)

x, y and p are integers, and xyp ≠ 0. If \({p^x < p^y}\), which of the following MUST be true?

i) \({x - y < 0}\)

ii) \({x < 2y}\)

iii) \({x^p < y^p}\)

A) i only
B) ii only
C) iii only
D) i and ii only
E) none of the above