At one time, most people believed that the Universe was static, meaning it did not change. When larger and better telescopes were invented in the early 1900s, however, it was discovered that light from objects in space shifted toward longer wavelengths. Scientists concluded that only an expanding Universe could explain this shift. Which of the following statements is supported by this example? A. The principle of the expanding Universe is a scientific law. B. Once a scientific theory has been accepted, it can never change. C. The theory of the expanding Universe cannot change, even if new evidence arises. D. Scientific knowledge can change when new evidence or interpretations arise.