Thomas Robert Malthus, in His "Essay on the Principle of Population

Thomas Robert Malthus, in his "Essay on the Principle of Population" (1798) , argued that

A) Married couples had a religious duty to have as many children as possible.
B) Modern science would have no difficulty increasing production fast enough to keep up with population increases.
C) Brainwork takes more energy than physical labor, so technologically advanced workforces would have sex less often and thus lower their birthrate.
D) Population will increase faster than productive capacity, so humans will always have wars, disease, and starvation.
E) Europeans should sustain themselves by getting cheap raw materials from poor countries.