The Wheatstone bridge shown in the above figure is balanced. If the positions of the cell `C` and the galvanometer `G` are now interchanged, `G` will show zero deflection

Options

A. in all cases
B. only if all the resistances are qual
C. only if `R_(1)=R_(3)` and `R_(2)=R_(4)`
D. only if `R_(1)//R_(3)=R_(2)//R_(4)`

Answer

A