Please show complete solution why option (c) is the correct answer.. Thank you very much!

24. It is proposed to warm a collector plate with solar energy. The collected energy is then transferred as heat to a fluid in a heat engine which in turn rejects heat to the atmosphere. If 200 BTU-h-!-A2 of energy can be collected when the plate is operating at 190F, estimate the minimum collector area required for a plant producing 1 kW of useful shaft power. Assume atmospheric temperature of 70F. (1 BTU-h' = 0.29307 W) b. 90 ft? C. c. 92 ft? d. 94 ft a. 88 f