Which statements describe a NEGATIVE outcome of the invention of the cotton gin? Choose TWO.

A The invention made processing cotton faster, easier and more efficient.The invention made processing cotton faster, easier and more efficient. - this question requires at least 2 answers
B By 1850, almost 75% of the world's cotton was processed in the United States.By 1850, almost 75% of the world's cotton was processed in the United States. - this question requires at least 2 answers
C Twenty years after the cotton gin invention, the number of slaves in America had doubled.Twenty years after the cotton gin invention, the number of slaves in America had doubled. - this question requires at least 2 answers
D To keep up with demand for cotton, plantation owners set very long hours of relentless work.To keep up with demand for cotton, plantation owners set very long hours of relentless work. - this question requires at least 2 answers
E In the decade following the invention, cotton production rose from 3,000 bales a year to 100,000 bales a year.

C and D.