The graph represents a mechanic’s labor costs for a given number of hours of car repair. Which statement describes the relationship between labor cost and time for a car repair? (A) All repairs requiring 1 hour or less have the same labor cost. (B) Labor costs the same no matter how many hours are used for a repair. (C) Labor costs for a repair are more expensive as the number of hours increases. (D) There is no cost of labor for a repair requiring less than 1 hour.