A meter bridge is set up as shown, to determine an unknown resistance `X` using a standard 10 ohm resistor. The galvanometer shows null point when tapping -key is at 52 cm mark. The end-corrections are 1 cm and 2 cm respectively for the ends A and B. The determine value of `X` is
A. 10.2 ohm
B. 10.6 ohm
C. 10.8 ohm
D. 11.1 ohm
