What Did the British Economist Thomas Malthus Conclude in His

What did the British economist Thomas Malthus conclude in his 1798 Essay on the Principle of Population?

A) That population pressure would always force wages down to subsistence levels
B) That men and women should limit population growth by marrying late in life
C) That the standard of living was a reflection of industrial capacity
D) That checks to population growth would harm the British economy