Which of the following statement or statements in case of a thermodynamic process is or are correct? (The symbols carry their usual meaning.)

A

$$\Delta E_{int} = W$$ indicates an adiabatic process.

B

$$\Delta E_{int} = Q$$ suggests an isochoric process.

C

$$\Delta E_{int} = 0$$ is true for a cyclic process.

D

$$\Delta E_{int} = -W$$ indicates an adiabatic process.