PLease help which would be an exception to the comity clause

A) Buying and selling in different states
B) charging more money for out-of-state college tuition
C) freely traveling between states
D) recognizing all marriages from all states

It's B!!

Explanation:

c.) the country needed a stronger central government.

the second significant cause of the great migration was the desire of black southerners to escape segregation, known euphemistically as jim crow. rural african american southerners believed that segregation - and racism and prejudice against blacks - was significantly less intense in the north.