An Ideal Carnot Heat Engine Operates Between $285 \mathrm {~K}$ And $460 \mathrm {~K} .$

Multiple Choice

An ideal Carnot heat engine operates between $285 \mathrm {~K}$ and $460 \mathrm {~K} .$ What is its efficiency?

A) 0.38
B) 0.62
C) 0.61
D) 1.61