If T2 is the temperature of heat rejection, Tml is the mean temperature of heat addition, the efficiency n of a Rankine Cycle is given by which of the expressions?

• A. n = 1-(T2/Tml)
• B. n = 1+(T2/Tml)
• C. n = (T2/Tml)
• D. n = 1/(T2/Tml)