Look at this picture. How did this inspire referee Ken Ashton to improve the way penalties are given?
A He created the yellow card as a warning and a red card for getting sent off.
B He used the colours to notify fans when their behaviour was getting out of control.
C He began using the yellow card to let the fans know how badly injured a player was.
D He decided to use colours to let the players know when they were running out of time.