What is the normalized relationship between f and c for the FROMM scheme?

• A. ( tilde{ phi_f}= tilde{ phi_c}+ frac{1}{4} )
• B. ( tilde{ phi_f}= tilde{ phi_c}- frac{1}{4} )
• C. ( tilde{ phi_f}= frac{1}{4}- tilde{ phi_c} )
• D. ( tilde{ phi_f}= frac{1}{4} tilde{ phi_c} )