[单选题]
A wheel starts from rest andc eu ezfr8nzwg)4(,fymc p) (0 reaches an angular spb c 0knugq+6(q) 9rpnxeed of 6.0 rad/s while turning through 2.0 revolutions. What is the average angular accel9qkp6+ 0r(cgubn nq)xeration of the wheel?
A. $0.24 \; rad/s^2$
B. $1.4 \; rad/s^2$
C. $3.0 \; rad/s^2$
D. $9.0 \; rad/s^2$
