Which of the Following Was Theorized by Thomas Malthus in 1798

Which of the following was theorized by Thomas Malthus in 1798?

A) Both population and food supply increase in an arithmetic ratio.
B) ​Both population and food supply increase in a geometric ratio.
C) ​Uncontrolled population increases in an arithmetic ratio, whereas the food supply, at best, increases in a geometric ratio.
D) Uncontrolled population increases in a geometric ratio, whereas the food supply, at best, increases in an arithmetic ratio.