In the region where \(\tilde{\phi_c}<0 \,and\, \tilde{\phi_c}>1,\) ___________ is dominant.

• A. (Note: \(\tilde{\phi_c} \,and\, \tilde{\phi_f}\) are the normalized flow variables at the upwind node and the face).
• B. conduction
• C. convection
• D. radiation
• E. anti-diffusion