What are all the exact solutions of 2sin² x- sin x = 0 for 0 ≤ x ≤ 2π? Give your answer in radians.
A. π /6 and 5π /6.
B. 0, π /6 , π , and 5π /6.
C. π /3 , π /2 , 3π /2 , and 5π /3.
D. π /6 , π , 5π /6 h , and 2.