It is your first time eating at Subway in the Student Union. Shortly after eating a ham sub, you become very sick. You swear that you will never eat there again. A few weeks later, you enter your dorm, and your roommate offers you some ham and cheese crackers. You cringe at the smell of the ham. Identity the unconditioned stimulus (US), conditioned stimulus (CS), unconditioned response (UR) and conditioned response (UR)