A motor cycle starts from rest from a stationary source of sound and moves away from the source with a uniform acceleration $2 \mathrm{~ms}^{-2}$. Distance travelled by the motor cycle when the person on it hears the sound of frequency which is $94 \%$ of the true frequency, is nearly (speed of sound in air $=330 \mathrm{~ms}^{-1}$ )

• A

  $49 \mathrm{~m}$
• Correct answer
  B

  $98 \mathrm{~m}$
• C

  $147 \mathrm{~m}$
• D

  $196 \mathrm{~m}$

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