If x^2 = y^3 , where x and y are non negative…

If x^2 = y^3 , where x and y are non negative and non zero integers, what is the greatest possible value of x / y from options below?

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #52507