Consider the following statements regarding sound wave propagation across different media: 1. When a sound wave travels from air into water, its frequency remains unchanged, but its wavelength increases. 2. The speed of sound in a gas is independent of the frequency and wavelength of the sound wave. 3. In a longitudinal wave, the particles of the medium vibrate in a direction perpendicular to the direction of wave propagation. Which of the statements given above is/are correct?

Options:

• A: 1 and 2 only
• B: 2 and 3 only
• C: 1 and 3 only
• D: 1, 2 and 3

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