A Steam Engine Operates Between a High and Low Temperature $\circ$

Multiple Choice

A steam engine operates between a high and low temperature of 550 ^$\circ$ C and 180 ^$\circ$ C.If the steam engine operates at 40% of its theoretical maximum efficiency and does work at a rate of 1000 W,calculate how much heat is discharged per hour.

A) 0.8 MJ/hr
B) 2.8 MJ/hr
C) 3.4 MJ/hr
D) 16 MJ/hr
E) 12 MJ/hr