【单选题】

Which of the following best describes the organization of the passage

A、A、hypothesis is described, challenged by a second hypothesis, then disproved by research.
B、A、hypothesis is described, then confirmed by research, disproving a second hypothesis.
C、A、hypothesis is described, then established by research, then replaced by a second hypothesis.
D、A、hypothesis is described, then modified through research, then compared with a second hypothesis.
E、A、hypothesis is described, then abandoned after research, and replaced with a second hypothesis.