Correct Option: D

Newton’s Law of Cooling states that the rate of temperature of the body is proportional to the difference between the temperature of the body and that of the surrounding medium. When a body cools by radiation, then rate of cooling depends upon the following factors: l Nature of the radiating surface, that is, emissivity; l Area of the radiating surface; l Mass of the radiating surface; l Specific heat of the radiating body; l Temperature of radiating body and l Temperature of the surrounding.