Dimensions of coefficient of viscosity `eta` in terms of momentum (P), area (A), time (t)

Options

A. a.`[eta] = [P A^-1 T^0]`
B. b.`[eta] = [P A^-1 T^1]`
C. c.`[eta] = [P A^-1 T^-1]`
D. d.`[eta] = [P^-1 A^-1 T^0]`