Consider a model of finite control volume (volume V and surface area) moving along the flow with elemental volume dV, vector elemental surface area d\(\vec{S}\), density ρ and flow velocity \(\vec{V}\). What is the time rate of change of mass inside the control volume?

• A. moving along the flow with elemental volume dV, vector elemental surface area d\(\vec{S}\), density ρ and flow velocity \(\vec{V}\). What is the time rate of change of mass inside the control volume?a) \(\iiint_V\rho dV\)
• B. \(\frac{\partial}{\partial t} \iiint_V\rho dV\)
• C. \(\frac{D}{Dt} \iiint_V\rho dV\)
• D. ρdV