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`?
Options:
(a) `i` approaches zero, `V` approaches `E`
(b) `i` approaches `E/r, V` approaches zero
(c) `i` approaches `E/r,V` approaches `E`
(d) `i` approaches infinity, `V` approaches `E`