The Difference Between "Moist" and "Dry" Adiabatic Rates Is Due

Multiple Choice

The difference between "moist" and "dry" adiabatic rates is due to the fact that​

A) saturated air is always unstable.
B) an unsaturated air parcel expands more rapidly than a saturated air parcel.
C) ​moist air weighs less than dry air.
D) ​latent heat is released by a rising parcel of saturated air.
E) ​moist air weighs more than dry air.