Mathematically, what is meant by Kelvin s Circulation Theorem for an i – McqOptions

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1.	Mathematically, what is meant by Kelvin s Circulation Theorem for an inviscid and incompressible flow? (For the same set of fluid elements moving in a closed curve along with the fluid).
A.	D /Dt = 0
B.	1 2, where 1 is the upstream direction
C.	= - <sub>C1</sub>V.ds
D.	= 0
Answer» B. 1 2, where 1 is the upstream direction

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