Which of These Statements Represents What Darwin Thought of Artificial

Which of these statements represents what Darwin thought of artificial selection?

A) He reasoned that if characteristics that better enable organisms to adapt to specific environmental pressures exist, then artificial selection will tend to increase those in succeeding generations.
B) He reasoned that if a person could select different characteristics when breeding organisms, then nature could do so as well.
C) Humans were selecting the characteristics they wanted in the offspring by choosing parents with those traits.
D) Humans were selecting the characteristics they wanted in the offspring by eliminating individuals that did not show these characteristics.