What was the effect of climate change and economic depression on the Ming Dynasty?

9. What was the effect of climate change and economic depression on the Ming Dynasty?
A. It impoverished the people and allowed Ming rulers to consolidate their power further.
B. It created new opportunities for Japanese armies to expand trade and dominate China.
C. It started rebellions, which allowed the Manchus to gain power.
D. It resulted in the Mongols establishing the Yuan dynasty.