A Neutron Star Is Detected from Earth as a Pulsar

Multiple Choice

A neutron star is detected from Earth as a pulsar by its regular radio pulses only if Earth lies

A) in the neutron star's "equator," the plane perpendicular to its spin axis.
B) within the path of the narrow beam of radiation being generated by the neutron star along its magnetic axis as the star rotates rapidly.
C) in the plane of the neutron star's magnetic equator, halfway between its magnetic poles.
D) directly above the rotation axis of the rotating neutron star.