A train approaches a station at a constant speed, sounding its whistle continuously. Three students are discussing what an observer standing at a station would hear as the train is approaching: Anish: Brooke: Cruz: "The train is not accelerating or decelerating. I think the observer will hear a constant pitch that matches the pitch of the whistle." "Even if it isn't accelerating, the observer will hear a higher pitch than the whistle actually emits since the train is moving toward the observer. I agree that the observer will hear a constant pitch." "I agree with Brooke that the observer will hear a higher pitch, but I think the observer will also hear the frequency increase constantly as the train gets closer and closer." With which, if any, of these students do you agree? Anish Brooke _ Cruz. Explain your reasoning. None of them