Two brothers, Leo and William, are racing their bikes around
a 9.5-mile loop. Since Leo is younger, he is given a 1.5-mile
head start. The graph to the right shows Leo's progress.
The expression 19x can be used to determine y, the distance
in miles that William has traveled after x hours have passed.
Which statement about this situation is not true?

A. William is traveling at a faster speed than Leo.

B. The difference between their speeds is exactly
1.5 miles per hour.

C. Leo traveled only 8 miles during the race.

D. Both brothers will finish the race in 1/2 hour.