Consider the following diagram.In the diagram,phi_u → Φuphi_d → Φdphi_c → ΦcFind the normalized flow variable \((\tilde{\phi_f})\) at the face f as in the NVF approach.

\(\tilde{\phi_f}=\frac{(\phi_f-\phi_c)}{(\phi_f-\phi_u)}\)

\(\tilde{\phi_f}=\frac{(\phi_f-\phi_u)}{(\phi_c-\phi_u)}\) c) \(\tilde{\phi_f}=\frac{(\phi_f-\phi_c)}{(\phi_d-\phi_

}{(\phi_f-\phi_u)}\) b) \(\tilde{\phi_f}=\frac{(\phi_f-\phi_u)}{(\phi_c-\phi_u)}\) c) \(\tilde{\phi_f}=\frac{(\phi_f-\phi_c)}{(\phi_d-\phi_c)}\)

\(\tilde{\phi_f}=\frac{(\phi_f-\phi_u)}{(\phi_d-\phi_u)}\)

Consider the following diagram.In the diagram,phi_u → Φuphi_d →

1.	Consider the following diagram.In the diagram,phi_u → Φuphi_d → Φdphi_c → ΦcFind the normalized flow variable \((\tilde{\phi_f})\) at the face f as in the NVF approach.
A.	\(\tilde{\phi_f}=\frac{(\phi_f-\phi_c)}{(\phi_f-\phi_u)}\)
B.	\(\tilde{\phi_f}=\frac{(\phi_f-\phi_u)}{(\phi_c-\phi_u)}\) c) \(\tilde{\phi_f}=\frac{(\phi_f-\phi_c)}{(\phi_d-\phi_
C.	}{(\phi_f-\phi_u)}\) b) \(\tilde{\phi_f}=\frac{(\phi_f-\phi_u)}{(\phi_c-\phi_u)}\) c) \(\tilde{\phi_f}=\frac{(\phi_f-\phi_c)}{(\phi_d-\phi_c)}\)
D.	\(\tilde{\phi_f}=\frac{(\phi_f-\phi_u)}{(\phi_d-\phi_u)}\)
Answer» E.