Which of the following is/are correct about sound?
(A) Sound is produced by vibrating objects
(B) Sounds does not require medium to travel
(C) In humans, the vibration of the vocal cords produces sound
(D) Plantation on the road side can reduce noise pollution
1
(A), (B), (C)
2
(A), (C), (D)
3
(B), (C), (D)
4
(B), (D), (A)