Which of the Following Explains Why South Asia Was Less

Multiple Choice

Which of the following explains why South Asia was less severely affected by the Black Death than were China,Europe,or the Islamic world?

A) South Asian societies had escaped the Mongol conquest and were not directly linked to Mongol-controlled trade routes.
B) South Asians had a natural immunity to the microbes that caused the plague.
C) No rats live in South Asia because the climate does not support them.
D) Indian Ocean merchants were never hit by the Black Death.