[单选题]
A wheel of diameter of 68.0 cm slows down unifkiy5(6s h 4szrq*6iyy9y d)u iormlyglb, cgi*5k3 q from 8.40 m/s to rest over a distance of 115gk, c3 qglib5* m. What is the angular acceleration?
A. $-1.80 \; rad/s^2$
B. $-0.90 \; rad/s^2$
C. $-5.65 \; rad/s^2$
D. $-11.3 \; rad/s^2$