There are currently 4 people signed up to play on a baseball team. The team must have at least 9 players.

Which of the following graphs includes the possible values for the number of people who still need to sign up for the team?

a) Number line with closed circle on 5 and shading to the left

b) Number line with closed circle on 5 and shading to the right.

c) Number line with open circle on 5 and shading to the left.

d) Number line with open circle on 5 and shading to the right.