What is the value of “beta” if h represents the local enthalpy on the given expansion line at a given pressure & hf is the enthalpy of saturated water at that pressure?

• A. h + hf
• B. h x hf
• C. h ‚Äö√Ñ√∂‚àö√ë‚àö¬® hf
• D. none of the mentioned