Evaluations for input

Air flows into a heat engine at ambient conditions of 100 kPa, 300 K, as shown in <image 1>. Energy is supplied as 1200 kJ per kilogram of air from a 1500 K source, and in some part of the process a heat transfer loss of 300 kJ/kg air occurs at 750 K.The air leaves the engine at 100 kPa, 800 K. Find the first- and second-law efficiencies

(A) 0.32 0.67

(B) 0.32,0.74

(C) 0.67,0.32

(D) 0.74,0.32

Answer with the option's letter from the given choices directly. No punctuation.