Enthalpy Change Is Defined as

Enthalpy change is defined as

A) the energy that is transferred into or out of a system when the pressure is constant and only P-V work is done.
B) the change in internal energy of a system when the pressure is constant.
C) the change in internal energy of a system when the volume is constant.
D) the energy that is transferred into or out of a system when the pressure is constant and no work is done.
E) the change in internal energy of a system when the pressure is constant and no work is done.