Assertion: Series combination of cells is used when their internal resistance is much smaller than the external resistance.
Reason: `I=(n epsilon)/(R+nr)` where is symbols have their standard meaning in series connection

Options

A. Both (A) and (R) are true and (R) is the correct explanantion of A.
B. Both (A) and (R) are true but (R) is not the correct explanation of A.
C. (A) is true but (R) is false
D. (A) is false but (R) is true.

Answer

A