A graph titled Position versus time for 3 runners with horizontal axis time (seconds) and vertical axis position (meters). A blue line labeled A has the greatest upward slope followed by an orange line labeled B followed by a green line labeled C. Lines A and B intersect 0 seconds 0 minutes while line C intersects the vertical axis at 0 seconds a positive distance above 0 meters. Which runner had the fastest speed in the race?

B

Which runner had the slowest speed in the race?

Which runner had a head start?