Of the following given options, which one of the following does not provides an optimal solution for 8-queens problem?

• A. (5,3,8,4,7,1,6,2)
• B. (1,6,3,8,3,2,4,7)
• C. (4,1,5,8,6,3,7,2)
• D. (6,2,7,1,4,8,5,3)