The family practice department at University Medical School offered the following information to its advisory board about placement of family practice graduates in your state for the past five years: Year 1 = 55 positions offered and 46 positions filled, Year 2 = 50 positions offered and 46 positions filled, Year 3 = 52 positions offered and 40 positions filled, Year 4 = 61 positions offered and 58 positions filled, and Year 5 = 64 positions offered and 62 positions filled. What type of graph would be most appropriate?

a. Line graph

b. Bar graph

c. Pie chart

d. Scattergram