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Which of the following statements is correct?

(i)  In transverse waves, the particles of the medium vibrate at right angles to the direction of wave.

(ii) Transverse waves consist of crests and troughs.

(iii) Transverse waves can propagate through all types of media.

(iv) In transverse waves, the distance between the two consecutive crests or between the two consecutive troughs is equal to one wavelength.

A) (i),(ii) and (iii)

B)  (ii),(iii) and (iv)

C)  (i), (ii) and (iv)

D)  only (ii)

E)  None of these