28. 請問布林代數F = ???? ̅̅̅̅̅̅̅̅ + ?̅???̅̅̅̅ + ??? ̅̅̅̅̅̅? + ???? + ???̅? + ??̅?? + ??̅??̅可以等效於下列哪一個選項？ (A)F = (A + ?̅ )(?̅ + B + C)(?̅ + ?̅ + ? )。 (B)F = (A + ?̅ )(?̅ + B + C)(?̅ + ?̅ + ? )。 (C)F = (A + ?̅ )(?̅ + C + D)(?̅ + ?̅ + ? )。 (D)F = (A + ?̅ )(?̅ + B + C)(?̅ + ?̅ + ? )。