35 Select the correct answer.
Which is true according to the law of conservation of energy?
A.
In a closed system, the total amount of energy in the universe keeps on changing.
B.
The supply of energy is limited, so it is essential to conserve it.
C.
In a closed system, energy can be created and destroyed.
D.
In a closed system, energy cannot be used faster than it is created.
E.
In a closed system, the total energy always remains constant.