Seepage in return air ducts turned within the conditioned space may have what kind of effect?
a) It will add to the amount of air needed to supply the cooled space.
b) It will ruin the duct's insulation.
c) It will increase the load on the air system in terms of volumes of air.
d) It will increase the load on the air system in terms of pressure.
e) It will create a loss of cooling effect.
Answer: C