[单选题]
A bicycle wheel rotate hmw*rf9g zj+8lp((iws s*ei3ors z e5 .yk(u bk1y3)j)c 1treruniformly through 2.0 revolutions in 4.0 s. What is the frequency of the yoe)r 5cesei )by.k 31(1srzju3t*rk wheel's rotation?
A. $0.50 \; Hz$
B. $1.0 \; Hz$
C. $2.0 \; Hz$
D. $4.0 \; Hz$
