Choose the correct answer.Where did the term marathon come from?

The long-distance foot race known as the marathon is named after the celebrated Athenian victory over Persian invaders near the Bay of Marathon in Greece in 490 B.C. It commemorates the feat of the Greek soldier who ran 25 miles [40 kilometers] from the battle-field to Athens with tidings of the victory,only to die of exhaustion.A marathon was incorporated into the Olympic Games when the modern series began in Athens in 1896 and has retained an important place in them.