If two bodies of masses 2 kg and 3 kg are moving at right angles with velocities $20 \mathrm{~m} \mathrm{~s}^{-1}$ and $10 \mathrm{~m} \mathrm{~s}^{-1}$ respectively, then the velocity of the centre of mass of the system of the two bodies is

• A

  $5 \mathrm{~m} \mathrm{~s}^{-1}$
• B

  $30 \mathrm{~m} \mathrm{~s}^{-1}$
• Correct answer
  C

  $10 \mathrm{~m} \mathrm{~s}^{-1}$
• D

  $14 \mathrm{~m} \mathrm{~s}^{-1}$

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