Which of the following are true statements? Justify your responses, true or false, with a sentence or two.c

A. Enthalpy appears in the conservation of energy equation for open systems because open systems involve constant-pressure processes.

B. Enthalpy appears in the conservation-of-energy equation for ope systems because the internal energies of the inlet and outlet fluid streams are negligible.

C. Flow work (rate) is another name for shaft work (rate).

D. The pressure force at the inlets and outlets is responsible for the flow work (rate).