Which of the following statements correctly explains a way in which evolution by natural selection and Lamarck's ideas about evolution are different?

• A. Lamarck focused on an organism's ability to reproduce, whereas natural selection focuses on survival.
• B. Natural selection requires variation to already exist in a population, whereas Lamarck said that variation could be created through use and disuse.
• C. Natural selection explains how individuals will adapt to new environments, whereas Lamarck explained how populations change in their current environments.
• D. Lamarckian explanations did not explain how populations become better adapted overtime, whereas natural selection did explain adaptation.