Pick out the wrong statement?

A. With increase in the Mach number >0.6, the drag co-efficient decreases in case of compressible fluids

B. In the equation, T. gc = k. (du/dy)n the value of n for pseudoplastic and Dilatant fluid are 1 respectively

C. The shear stress at the pipe (dia = D, length = L) wall in case of laminar flow of Newtonian fluids is (D/4L). ?p

D. Shear stress for Newtonian fluid is proportional to the rate of shear in the direction perpendicular to motion

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