What was Machaut's duty during the English campaign to capture Reims in 1359 during the Hundred Years' War?

A) worked as a diplomat to bring about a peaceful resolution to the crisis
B) gave sermons and wrote poetry to encourage the citizens to resist the invaders
C) even though he was nearly sixty-years-old, he put on armor and took his turn on the ramparts of the city to repel the English
D) he remained shut up in his house until the danger was past

C