In a meter bridge, the null point is located at 20 cm from left end of the wire when resistances R and S are connected in the left and right gaps respectively. If the resistance $S$ is shunted with $60 \Omega$ resistance, the null point shifted by 5 cm, then the values of $R$ and $S$ are respectively

• A

  $24 \Omega, 6 \Omega$
• B

  $6 \Omega, 24 \Omega$
• Correct answer
  C

  $5 \Omega, 20 \Omega$
• D

  $20 \Omega, 5 \Omega$

Hence, the correct answer is option: 'C'.