Consider a hypothetic spherical body. The body is cut into two parts about the diameter. One of hemispherical portion has mass distribution m while the other portion has indentical charge distribution q. The body is rotated about the axis with constant speed `omega.` Then, the ratio of magnetic moment to angular momentum is
A. `q/(2m)`
B. `gtq/(2m)`
C. `lt q/(2m)`
D. cannot be calculated
