A spherical body of diameter $D$ is falling in viscous medium. Its terminal velocity is proportional to

• A

  $V_t \propto D^{1 / 2}$
• B

  $V_t \propto D^{3 / 2}$
• Correct answer
  C

  $V_t \propto D^2$
• D

  $V_t \propto D^{5 / 2}$

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