Acompany that sells cellular phones has a cost of 4x + 10 dollars and a revenue of x2+5x+6 dollars, where x represents the number of cell phones sold per week. if profit = revenue - cost, find the company's profit.

a) x^2+x−4

b) x^2+2x−4

c) x^2−x+4

d.) x^2−2x+4