what will the motion of a charged particle in a cyclotron if the frequency of the radio frequency field is doubled ?

Question

$\begin{array}{1 1} \text{the radius of the path in the dees of the changed particle is also doubled} \\ \text{the radius of the oath in the dees of the changed particle is halved} \\ \text{the radius of the path in the dees of the changed particle is reduced by 2 times}\\ \text{the radius of the oath in the dees of the changed particle is unchanged}\end{array}$