The value of the flow variable at face centre (Φf) in terms of the flow variable at the owner cell’s centre (ΦC) and the neighbouring cell’s centre (Φf) as given by the face-based stencil is ________

• A. (Note: g is the weighted average).
• B. Φf=gC ΦC+gC Φf
• C. Φf=gC ΦC+gf Φf
• D. Φf=gC ΦC+(1-gC)Φf
• E. Φf=gC ΦC+(1+gC)Φf