Heather's Organization Works with a Labor Union Work Force

Heather's organization works with a labor union work force. Heather has heard rumors that the union has been trying to create a hot cargo agreement with a supplier. What is a hot cargo agreement?

A) It forces suppliers to join the union.
B) It's a threat that the union will slow down processing orders for non-union shops.
C) It's an agreement that an employer will stop doing business with a non-union business.
D) It's an agreement to rush orders for union-based businesses.