The product of sum expression of a Boolean function F(A, B, C) of three variables is given by F(A, B, C) = ( A + B + C̅) ∙ (A + B̅ + C̅) ∙ ( A̅+ B + C ) ∙ ( A̅+ B̅ + C̅)The canonical sum of product expression of F(A, B, C) is given by

• A. A̅ B̅ C + A̅ B C + A B̅ C̅+ A B C
• B. A̅ B̅ C̅+ A̅ B C̅+ A B̅ C + A B C̅
• C. A B C̅ + A B̅ C̅ + A̅ B C + A̅ B̅ C̅
• D. A̅ B̅ C̅ + A̅ B C + A B C̅ + A B C