With counter flow arrangement of air and water in a cooling or heating coil:
a. The water supply connection is on the same side as the entering air
b. The heat transfer efficiency is the same as with parallel arrangement of air and water
c. The water supply connection is on the same side as the air leaving the coil
d. The water return connection is on the same side as the leaving air
e. It decreases the heat transfer efficiency
Answer: C