$A$ battery of emf $E$ has an internal resistance $r$. $A$ variable resistance $R$ is connected to the terminals of the battery. $A$ current $i$ is drawn from the battery. $V$ is the terminal potential difference. If $R$ alone is gradually reduced to zero,which of the following best describes $i$ and $V$?
- A$i$ approaches zero,$V$ approaches $E$
- B$i$ approaches $\frac{E}{r}$,$V$ approaches zero
- C$i$ approaches $\frac{E}{r}$,$V$ approaches $E$
- D$i$ approaches infinity,$V$ approaches $E$
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