For AB + A C + BC = AB + A C the dual form is

• A. (A + B) (A + C)(B + C) = (A + B)(A + C)
• B. (A + B ) (A + C)(B + C) = (A + B)(A + C)
• C. (A + B) (A + C) (B + C) = (A + B) (A + C)
• D. none of the above