If ( vec{f} ) is the body force of an infinitesimally small element ( – McqOptions

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1.	If ( vec{f} ) is the body force of an infinitesimally small element (volume dx dy dz and density ) moving along with the flow (velocity ( vec{V} )), Which term is the work done by the body force?
A.	( vec{f}. vec{V} )dx dy dz
B.	( rho vec{f}. vec{V} )
C.	( rho vec{f}. vec{V} )dx dy dz
D.	( rho vec{f} )dx dy dz
Answer» D. ( rho vec{f} )dx dy dz

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