A number of cells are to be grouped so a...

A number of cells are to be grouped so as to obtain maximum current. The internal resistance of each cell is `r` and the total external resistance is `R`. Which of the following is wrong ?

A

Series combination for `R gt r` and parallel for `R lt r`

B

Parallel combination for `R gt r` and series for `R lt r`

C

Mixed combination for `R ~~ r`

D

None of the above.

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