Which of the following processes does not involve a change in entropy?A. An electric heater raises the temperature of a cup of water by 20°C.B. A ball rolls up a ramp, decreasing in speed as it rolls higher.C. A basketball is dropped from 2 m and bounces until it comes to rest.D. The sun shines on a black surface and warms it.

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A: isothermal adiabatic

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