A student created a model to demonstrate the Doppler Effect. Which three statements correctly compare the sound waves experienced by observer A and observer B? Select 3 statements that apply. A. Observer B experiences a wave with fewer crests. B. Observer B experiences a wave with lower energy. C. Observer b experiences a wave with a higher pitch. D. Observer b experiences a wave with a slower speed. E. Observer b experiences a wave with a higher frequency. F. Observer b experiences a wave with a shorter wavelength.