Technician A says that the excessive length of a heater hose is intended to protect the heater core from undue stress. Technician B says that excessive wear adds to the length of a heater hose, and a replacement heater hose should be roughly three to four inches shorter than its predecessor. Who is correct? A. Technician B B. Both Technicians A and B C. Neither Technicians A nor B D. Technician A