[单选题]
A wheel starts from rest and reaches an an xhn,( hueu2*zgular e5d 4ap8g3uns speed of 6.0 rad/s while turning through 2.0 revolutions. What is the8 nusd g3a4p5e 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. $9.0 \; rad/s^2$
