Which of the following is NOT correct according to the First Law of Thermodynamics?
A. The First Law of Thermodynamics says that the total energy, including heat energy, is conserved.
B. If there is no heat input, the system cannot do any work.
C. If there is no heat input, work done by the system decreases its internal energy.
D. If there is no change in the internal energy, then net heat input is equal to the work done by the system.