select the correct answer.\nthe heat added to a thermodynamic system minus the work done is equal to which…

select the correct answer.\nthe heat added to a thermodynamic system minus the work done is equal to which of the following?\na. the heat lost from the system\nb. the internal energy\nc. the total heat added to the system\nd. the carnot efficiency of the system\ne. the thermodynamic increase
Answer
Brief Explanations:
According to the first law of thermodynamics, $\Delta U = Q - W$, where $\Delta U$ is the change in internal energy, $Q$ is the heat added to the system, and $W$ is the work done by the system. So, the heat added to a thermodynamic system minus the work done is equal to the change in internal energy.
Answer:
B. the internal energy