[单选题]
A bicycle wheel rotates uniformly through 2.0 revolutzs 8p 0o*unkq1zi pq++ions in 4 5gkjrum.bi rlq2zk9 -ds72;n.0 s. What is the frequency of th 2 rdmrkq5i7z j.2 b;l-9snguke wheel's rotation?
A. $0.50 \; Hz$
B. $1.0 \; Hz$
C. $2.0 \; Hz$
D. $4.0 \; Hz$
