A group of students performed an experiment to prove the law of conservation of energy. In the experiment, a flask containing water at room temperature was shaken vigorously for a few minutes. The table shows a partial record of the temperature of the water before and after shaking.

Experimental Record
Temperature
Before Shaking 20 °C
After Shaking Unknown

What best predicts the unknown temperature?
Group of answer choices

Less than 20 °C because the total energy of the system after shaking is lower

Greater than 20 °C because the total energy of the system after shaking is higher

Less than 20 °C, because the mechanical energy from shaking transforms to thermal energy

Greater than 20 °C, because the mechanical energy from shaking transforms to thermal energy