In a metre bridge experiment null point is obtained at 20 cm from one end of the wire when resistance $X$ is balanced against another resistance $Y$. If $X < Y$, then where will be the new position of the null point from the same end, if one decides to balance a resistance of $4X$ against $Y$?\\
(1) 50 cm\\
(2) 80 cm\\
(3) 40 cm\\
(4) 70 cm