In frictional fluid flow, the quantity, (P/ρ) + (V2/2gc) + gz/gc) is___________________?

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In frictional fluid flow, the quantity, (P/ρ) + (V2/2gc) + gz/gc) is___________________?

A. Constant along a streamline
B. Not constant along a streamline
C. Increased in the direction of flow
D. None of these