Consider the Navier Stokes and continuity: \text { dvidt }+v \cdot V v=f(1 / \rho) \mathrm{V} P+V \vee^{2} v+1-\mathrm{g} \mathrm{V} \cdot \mathrm{v}=0 in CV; u(x)=3; u(x+dx)=4; v(y)=5; v(y+dy)=4 Which is

not true? A) dw/dz may allow d/dz and w terms to be cancelled, or it can be w(z)=w(d+dz) B) must have 3-D flow C) left side of = represents convection D) right side of represents driving force and diffusion E) only valid for constant density and viscosity (Newtonian) fluids