The graph shows the number of teen motor vehicle fatalities since 1980 for males and females. Which statement is supported by this graph?
(a.) Male teens are better drivers than female teens. (b.) The difference between the number of fatal accidents involving male and female teens is widening. (c.) Over the last 30 years, teen fatalities due to motor vehicle accidents have decreased. (d.) Male teens are less likely than female teens to be involved in a fatal car accident.