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Which of the following pairs are correctly matched ?
1. Primary sex ratio-Sex at the time of conception
2. Secondary sex ratio-Sex at the time of birth
3. Tertiary sex ratio-Sex at the time of enumeration
4. Imbalance sex ratio-Sex of workers
Select the correct answer using the codes given below
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- 1, 2, 3 and 4
- 1, 3 and 4
- 2 and 4
- 1, 2 and 3
Correct Option: D
NA
