For a bounded higher-order scheme, \(\tilde{\phi_f}=1 \,when\, \tilde{\phi_c}\)= ____________

• A. (Note: \(\tilde{\phi_c} \,and\, \tilde{\phi_f}\) are the normalized flow variables at the upwind node and the face).
• B. ∞
• C. 0
• D. 1
• E. 0.5