In the fourth arm S of a post office box has a wire of length of 1 m and cross-sectional area of 1×10^-6 m² is connected Now, the galvanometer gives zero deflection when 10Ω plug from arm Q, 1000Ω plug from arm P and 2025Ω plug from arm R are removed from the box. Determine the specific resistance.

A 30.25×10^-6Ωm

B 10.25×10^-6 Ωm

C 40.25×10^-6 Ωm