from the question stem: 1. a and b is positive or zero.
we have to find whether a is a/ b are fractions.
Stem 1: not sufficient to decide. as if a is an positive integer then a^5 > B^2 BUT if is a fraction a^5 is not > B^2.
Stem 2: not sufficient for same reason.
Combining these to we can not decide whether a is a fraction or integer. we only can say a^1/3 and a are greater than B^2.
Any comparison between a^2 and a or any power of a would give a hints to solve the question.
E is the pick.
I dont understand how do we know that A and B are less than 0