An ideal vapor compression refrigeration cycle with R-134a as the working fluid operates between the pressure limits of 120 kPa and 700 kPa. The mass fraction of the refrigerant that is in the liquid phase at the inlet of the evaporator is
(a) 0.69
(b) 0.63
(c) 0.58
(d) 0.43
(e) 0.35