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:

b

explanation:

lee and grant, both of whom held the highest rank in their respective armies, had known each other slightly during the mexican-american war (1846-48) and began their dialogue by exchanging awkward personal inquiries. characteristically, grant had arrived in his mud-splattered field uniform while lee had turned out in full dress attire, complete with sash and sword.

explanation: