If h1 & h10 are the enthalpies at the inlet & at the exhaust, s1 & s10 are the enthalpies at the inlet & exhaust, the mean temperature of heat addition, Tml with regeneration is?

If h1 & h10 are the enthalpies at the inlet & at the exhaust, s1 & s10

1.	If h₁ & h₁₀ are the enthalpies at the inlet & at the exhaust, s₁ & s₁₀ are the enthalpies at the inlet & exhaust, the mean temperature of heat addition, T_ml with regeneration is?
A.	(h<sub>1</sub> + h<sub>10</sub>)/(s<sub>1</sub> + s<sub>10</sub>)
B.	(h<sub>1</sub> + h<sub>10</sub>)/(s<sub>1</sub> s<sub>10</sub>)
C.	(h<sub>1</sub> h<sub>10</sub>)/(s<sub>1</sub> + s<sub>10</sub>)
D.	(h<sub>1</sub> h<sub>10</sub>)/(s<sub>1</sub> s<sub>10</sub>)
Answer» E.