Which of the following expressions regarding the unit of coefficient of viscosity is not true?

All four choices are unsatisfactory.
The coefficient of viscocity is measured in S.I. units as ${\mathrm{Nm}}^{-2}\sec$

Dynes are the C.G.S. unit for viscosity. ${\mathrm{cm}}^{-2}\sec$

It is the same as one poise. 

$1\mathrm{P}\text{ oise }=0.1{\mathrm{Nm}}^{-2}\sec$