An air bubble of 1 cm radius is rising at a steady rate of 2.00 mm ${\mathrm{s}}^{-1} \mathrm{through} \mathrm{a} \mathrm{liquid} \mathrm{of} \mathrm{density} 1.5 \mathrm{g} {\mathrm{cm}}^{-3}.$ Neglect density of air. If g = 1000 cm ${\mathrm{s}}^{-2}$, then the coefficient of viscosity of the liquid is

• A

  0.166 $\times {10}^3 \mathrm{poise}$

• B

  $1.66 \times {10}^3 \mathrm{poise}$

• C

  $166 \times {10}^3 \mathrm{poise}$

• D

  $16.6 \times {10}^3 \mathrm{poise}$