HELP PLEASE ! if right will mark as brainliest !

What are the real solutions to the equation 4x^3 - x^2 - 4x + 1 = 0?

A) x= -1, 1/4, 1
B) x= -1, -1/4, 1
C) x= -1,1
D) x= -1, 0, 1/4