The graph below shows the amount that a high-tech arcade charges its customers ( x-axis represents the number of games played and y-axis represents the cost to play ). What could the y-intercept of this graph represent ?

Question

$\text{(a) The cost of playing 2 games } \\ \text{(b) The cost per game which is \$2} \\ \text{(c) The entrance fee to enter the arcade} \\ \text{(d)The number of games that are played} $