'Continental Drift Theory is affirmed'. Which statement/statements is/are true?
1. Computer estimates of topographic fit of continent coasts.
2. New investigations regarding geological similarities between the southern continents.
3. Paleomagnetic studies.
4. Evidences of sea-floor spreading.
1
1, 2 and 3
2
1, 3 and 4
3
2, 3 and 4
4
1, 2, 3 and 4