Three Particles of Equal Charge,X,Y,and Z,enter a Uniform Magnetic Field $\sqrt { 2 } \times R _ { z }$

Multiple Choice

Three particles of equal charge,X,Y,and Z,enter a uniform magnetic field B.X has velocity of magnitude v parallel to the field.Y has velocity of magnitude v perpendicular to the field.Z has equal velocity components v parallel and perpendicular to the field.Rank the radii of their orbits from least to greatest.

A) R_x = R_y < R_z.
B) R_x < R_y < R_z.
C) R_x = R_y = R_z.
D) R_x > R_y > R_z.
E) R_x < R_y = $\sqrt { 2 } \times R _ { z }$ .