With reference to Coronal Holes, consider the following statements:
1. These are regions on the sun’s surface where fast solar wind gushes out into space.
2. They have higher temperatures and appear much darker than their surroundings.
3. They can last much longer during solar minimum.
Which of the statements given above is/are correct?1
3 only
2
1 and 2 only
3
1 and 3 only
4
2 only