Han takes a shower in his family’s new apartment. He gets the water perfect—not too hot, because that hurts! Then Han hears his son flush the toilet. The water gets very hot, which makes Han feel a lot of pain. After this happens a few times, Han feels afraid when he hears a toilet flush while he is in the shower. When 1. Han is subject to classical conditioning, the unconditioned stimulus (US) is .a. hot water. b. the toilet flushing. c. feeling pain. d. feeling afraid. 2. When Han is subject to classical conditioning, the conditioned stimulus (CS) is:a. feeling pain. b. the toilet flushing. c. feeling afraid. d. hot water.3. When Han is subject to classical conditioning, The unconditioned response (UR) is .a. hot water. b. the toilet flushing. c. feeling pain. d. feeling afraid.4. When Han is subject to classical conditioning, the conditioned response (CR) is:.a. the toilet flushing. b. hot water. c. feeling afraid. d. feeling pain.