Which of these is the best summary of the passage? A.
Race officials have started to use many methods for catching runners who do not fairly complete the entire race. The methods range from high-tech chips to a simple glance at a runner's clothing and sweat stains.
B.
Race officials have discovered that runners who win races all have similar sweat patterns, salt stains on their faces, and similar running clothes and shoes. Cheaters do not usually follow these race patterns.
C.
Cheating has become a serious problem for big race organizers. Race officials in the Motorola Marathon are starting to take cheating very seriously. They do not want to reward people who do not run the marathon.
D.
Computer chips play a big part in catching runners who cheat in big races like the Motorola Marathon. The computer chip is very lightweight. It is about the size of a quarter and fits onto a running shoe easily.