Because the Magnetic Compass of Birds Appears to Be an Inclination

Multiple Choice

Because the magnetic compass of birds appears to be an inclination compass, and since most migratory birds inherit a program that tells them to travel in a certain geographical direction for a certain amount of time,

A) migrants from either the north or south hemisphere could use the same migratory program.
B) migrants from the northern hemisphere must have experience with the magnetic field near the equator to navigate correctly.
C) migrants that cross the equator can share migratory programs with birds that migrate within a hemisphere.
D) all of the above.