The component of a refrigerating system in which the refrigerant vaporizes and absorbs heat is known as the （）.

A.expansion valve to the compressor
B.receiver to the expansion coil
C.expansion valve to the evaporator
D.condenser to the expansion valve

A.leaking unloader
B.tripped circuit breaker
C.control line leak
D.defective pop valve

A.superheated
B.saturated
C.dense
D.flooded