You are an efficiency expert hired by a manufacturing firm that uses K and L as inputs. The firm produces and sells a given output. Ifw$=525,$ r$=550,$ MP$,=50,$ and MP$,=90,$ the firmA. is cost minimizi"B$.$ should use more L and less K to cost minimize.C$.$ should use less L and more K to cost minimize.D$.$ should use less of both L and K to cost minimize.E$.$ is profit maximizing but not cost minimizing.