Which of the following are correct statements. <br><br>When a wave passes through a medium <br> 1. the particles of the medium are disturbed <br> 2. the energy of the medium is disturbed <br> 3. the velocity of particles through the medium remains a constant <br> 4. there is a change in density and pressure of the particles

Question

$\begin{array}{1 1} (a)\; \text{1, 2 and 3} \\ (b)\; \text{2, 3 and 4} \\ (c)\; \text{1, 3 and 4} \\ (d)\; \text{1, 2 and 4} \end{array}$