Consider the following statements with reference to doldrums:
1. Doldrums comprise the equatorial belt of low atmospheric pressure.
2. The trade winds converge at doldrums.
3. There is strong upward movement of air in doldrums.
4. Doldrums are characterized by turbulent weather.
Which of the statements given above are correct ?
(a) 1 and 2 only (b) 3 and 4 only (c) 1, 2 and 3 only (d) 1, 2, 3 and 4
