A store is selling a black pair of shoes for $79.45 and a brown pair of shoes for $133.99. The black pair of shoes is marked up by 44%, and the brown pair of shoes is marked down by 21%. Which pair of shoes is more expensive, and how much more expensive is it? Round all dollar values to the nearest cent.a.The black pair costs $6.82 more than the brown pair.b.The black pair costs $8.56 more than the brown pair.c.The brown pair costs $9.72 more than the black pair.d.The brown pair costs $12.54 more than the black pair.