Joey worked 12 more hours than Chandler last week. Together, they worked a total of 57 hours. Which system of equations can be used to determine the number of hours Joey worked, x, and the number of hours Chandler worked, y? A.
x = y + 12
x + y = 45

B.
x = y + 12
x + y = 57

C.
x + y = 57
y = -x + 45

D.
x + y = 45
y = x - 12