A) What is the hot reservoir temperature (in degrees C) of a Carnot engine that has an efficiency of 43.0% and a cold reservoir temperature of 27.5C ? C B) What must the hot reservoir temperature (in degrees C) be for a real heat engine that achieves 0.750 of the maximum efficiency, but still has an efficiency of 43.0% (and a cold reservoir at 27.5C )? C) Does your answer imply practical limits to the efficiency of car gasoline engines