158. A 50 kg block of iron casting at 500 K is thrown into a large lake that is at a temperature of

285 K. The iron block eventually reaches thermal equilibrium with the lake water. Assuming

average specific heat of 0.45 kJ/kg-K for the iron, determine the entropy generated during this

process.

A. -12.65 kJ/K B. 16.97 kJ/K

C. 4.32 kJ/K D. 6.32 kJ/K