A bakery sells two types of cookies: chocolate chip and oatmeal raisin. A chocolate chip cookie costs $1.50 and an oatmeal raisin cookie costs $1.00. On a certain day, the bakery sold a total of 100 cookies and made a total of $120. Which of the following systems of equations can be used to find the number of chocolate chip cookies, , and oatmeal raisin cookies, , sold on that day?
