A boy weighing 50 kg climbs up a vertical height of 100 m. Calculate the amount of work done by him. How much potential energy does he gain ? (`g = 9.8 m//s^(2)`).

Options

A. both assertion reason are true and reason is the correct explanation of the assertion.
B. both assertion reason are correct and reason is not the correct explanation of the assertion.
C. Assertion is correct but reason is incorrect
D. Assertion is incorrect but reason is correct

Answer

B