[单选题]
What happens to the cyclotron frequency of a charged particle if the raden(7s)xpmwy p ss.(0zius of im.szy xs0s ewp(p)n 7(a 6c5 c6jgo r9g+rwck/9o iq6zts g kc+gj6ioc cz 66 rr9ao95qw/path doubles?
A. It triples.
B. It doubles.
C. It halves.
D. It does not change.
