In the region where \(\tilde{\phi_c}<0 \,and\, \tilde{\phi_c}>1,\) ___________ is dominant.(Note: \(\tilde{\phi_c} \,and\, \tilde{\phi_f}\) are the normalized flow variables at the upwind node and the face).

• A. conduction
• B. convection
• C. radiation
• D. anti-diffusion
• E. .a) conductionb) convectionc) radiationd) anti-diffusion