The cost of removing x percent of pollutants is expressed by the function 240x/100-x, where c is in thousands of dollars. which conclusion can be derived from this statement? a. the cost of removing 40 percent of the pollutants is $120,000 b. the cost of removing 80 percent of the pollutants is $960,000 c. the vertical asymptote lies at x= 0 d. the vertical asymptote lies at x= 240