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? (4 points) 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.