Artificial selection (chosen by person) and natural selection (best changed in the environment) differ in one major way- the forces that select which organisms are able to survive and reproduce. How are these processes different?

a. In natural selection, the organisms best adapted to survive in the environment are more likely to reproduce and pass on their traits, while in artificial selection, humans choose which organisms survive and reproduce.
b. In natural selection, humans choose which organisms survive and reproduce, while in artificial selection, the organisms best adapted to survive in the environment are more likely to reproduce and pass on their traits.
c. In natural selection, both the humans and the environment choose which organisms survive and reproduce, while in artificial selection technology chooses which organisms survive and reproduce.
d. In natural selection, technology chooses which organisms survive and reproduce, while in artificial selection, humans and the environment choose which organisms survive and reproduce.

I think it is A, but I believe two heads are better than one. So, check my answer pelase