Answer:
The correct answer to the question is
B) Technician B only
Step-by-step explanation:
A heater hose is a relatively inexpensive rubber hose used to transmit engine coolant though the engine to the radiator that supplies the heat required in the cabin. They normally extend from the engine to the dash board.
The heater hoses should be hot. If the hoses are cold, it is an indication of a blocked flow from either the heater control valves is blocked or the radiator becoming clocked with debris.