A) \[\eta \frac{S\Delta \theta }{h}\]
B)
C)
D)
\[\eta \left( \frac{S\Delta \theta }{h} \right)\left( \frac{1}{\rho g} \right)\]
\[\frac{S\Delta \theta }{\eta h}\]
\[\left( \frac{S\Delta \theta }{\eta h} \right)\left( \frac{1}{\rho g} \right)\]