Consider the following pairs :
| Type of tide | Characteristic |
| 1. Semi-diurnal tide | Two high tides and two low tides each day |
| 2. Spring tides | Occur when the sun, the moon, and the earth are in a straight line |
| 3. Neap tides | Occur when the sun and moon are at right angles to each other |
Which of the pairs given above are correctly matched?
1
1 and 2 only
2
2 and 3 only
3
1 and 3 only
4
1, 2 and 3