The school is having a bake sale and the pep squad is selling cookies. On one ticket they sold four chocolate chip cookies and five oatmeal cookies for $26. On another ticket they sold four chocolate chip cookies and two oatmeal cookies for $20. Which system of equations below can be used to determine the price of a chocolate chip cookie and the price of an oatmeal cookie? Let x represent the cost of a chocolate chip cookie, and let y represent the cost of an oatmeal cookie. OA. 4x + 4y = 26 5x + 2y = 20 OB. 8x + 7y = 46 8x - 7y = 46 OC. 4x + 5y = 26 4x + 2y = 20 OD 4x + 4x = 32 5y + 2y = 14​