A rotating object has an angular acceleration of = 0 rad/s2. Which one or more of

Question:

A rotating object has an angular acceleration of α = 0 rad/s2. Which one or more of the following three statements is consistent with a zero angular acceleration? A. The angular velocity is w = 0 rad/s at all times. B. The angular velocity is w = 10 rad/s at all times. C. The angular displacement u has the same value at all times.
(a) A, B, and C
(b) A and B, but not C
(c) A only
(d) B only
(e) C only