Which of the Following Was a Significant Impact of the Dispersal

Multiple Choice

Which of the following was a significant impact of the dispersal of new crops originating in Southeast Asia throughout the Islamic world and China during the Green Revolution?

A) New crops fed growing urban centers,but required fewer agricultural laborers.
B) Widescale famine ensued as traditional food crops were replaced with cotton.
C) Increased agricultural production created denser populations in the countryside.
D) New agricultural pests were transmitted along with the new crops,destroying many traditional food sources.