After the Attack on Pearl Harbor the fleet returned to Japan to attack the Philllppines, Singapore, Malaya and Hong Kong all in the same day.
As they did not understand the biology of the disease, many people believe that the black death was a kind of divine punishment retribution for sins against god such as greed, blasphemy, heresy, fornication and worldliness. By this logic, the only way to overcome the plague was to win God‘s forgiveness.
It should be C. You may want to check though, I’m not a expert