In a meter bridge the gaps are closed by resistance 2 and 3 ohm. The value of shunt to be added to 3 ohm resistor to shift the balancing point by 22.5 cm is :

Question

( A ) $2 \Omega$
( B ) $5 \Omega$
( C ) $2.5 \Omega$
( D ) $1 \Omega$