Consider an electrical conductor connected across a potential difference $V$. Let $\Delta q$ be a small charge moving through it in time $\Delta t$. If $I$ is the electric current through it,
(I) The kinetic energy of the charge increases by $I V \Delta t$.
(II) The electric potential energy of the charge decreases by $I V \Delta t$.
(III) The thermal energy of the conductor increases by $I V \Delta t$.
Then the correct statements are