What is the best title for the story

A．he defends himself from the blows of the other boxer and avoids striking the opponent
B．he strikes the opponent and quickly ends the match, and secures an easy victory for himself
C．he goes for two straight days with his arms up, not once putting them down or resting.
D．he would fight throughout the whole day, even in the summer

A．he believed that it was less difficult than becoming a soldier
B．he was undefeated throughout his career
C．it was the most honorable and most strenuous path open to him
D．an athlete would endure more difficulties