Luke goes to the fair with $50. Each ride costs $2. If an equation is written to show how much money Luke has at the end of the day, what is the slope and y-intercept?

A. slope = 50; y-intercept = 2
B. slope = 25; y-intercept = 50
C. slope = 25; y-intercept = 2
D. slope = -2; y-intercept = 50