The revenue, in thousands of dollars, that a company earns selling lawnmowers can be modeled by R(x)=90x-x^2 and the company's total profit, in thousands of dollars, after selling x lawnmowers can be modeled by P(x)=-x^2+30x-200. Which function represents the companys cost, in thousands of dollars, for producing lawnmowers?(Recall that profit equals revenue minus cost.) A. C(x)=-60x^2-200 B. C(x)=60x+200 C. C(x)=2x^2+60x+200 D. C(x)=-2x^2-60x-200