Which statements are correct for a Newtonian fluid?

Select all that apply

• Option A

  Shear stress is proportional to the velocity gradient.

• Option B

  The constitutive relation may be written as τ = η(dv/dy).

• Option C

  Dynamic viscosity has dimensions ML⁻¹T⁻¹.

• Option D

  Viscosity represents internal resistance to relative motion of neighbouring fluid layers.