If n is an integer and n^4 is divisible by 20, which…

If n is an integer and n^4 is divisible by 20, which of the following could be the remainder when n is divided by 20?

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 #46905