A heat engine absorbs 2500 J of heat from a hot reservoir and expels 1000 J to a cold reservoir. When it is run in reverse, with the same reservoirs, the engine pumps 2500 J of heat to the hot reservoir, requiring 1500 J of work to do so. Find the ratio of the work done by the heat engine to the work done by the pump. Is the heat engine reversible?
A. 1.0 (no)
B. 1.0 (yes)
C. 1.5 (yes)
D. 1.5 (no)
E. 2.5 (no)
Answer: B
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