Choose the one alternative that best completes the statement or answers the question. -When light travels from air into water,

Choose the one alternative that best completes the statement or answers the question.
-When light travels from air into water,
A) its frequency changes, but its velocity and wavelength do not change.
B) its velocity, wavelength and frequency all change.
C) its wavelength changes, but its velocity and frequency do not change.
D) its velocity changes, but its frequency and wavelength do not change.
E) its velocity and wavelength change, but its frequency does not change.

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