[单选题]
A wheel starts from rest and reaches an angksd)p9 + lqkcjnt cy-m3)0a 1zulakqe:5 nie m*(wr speed of 6.0 rad/s while turning through 2.0 revolutio:ew(e*ki qn5 mns. What is the average angular acceleration of the wheel?
A. $0.24 \; rad/s^2$
B. $1.4 \; rad/s^2$
C. $3.0 \; rad/s^2$
D. $9.0 \; rad/s^2$
