Russ needs 2 banners for each classroom he decorates.  He also needs 5 balloons for each hallway.  He can use no more than 500 balloons and banners in total.  Let x stand for the number of classrooms he is decorating.  Let y stand for the number of hallways he is decorating.  Which constraint represents this scenario?
  A. 
2y + 5x ≤ 500
  B. 
2y + 5x ≥ 500
  C. 
2x + 5y ≤ 500
  D. 
2x + 5y ≥ 500