Which is better WPI or CPI?

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2. #sector
3. #argue
4. #always
5. #critics
6. #wholesale
7. #affects
8. #traditionally
9. #based
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11. #india
12. #manufacturing
13. #since
14. #basket
15. #important
16. #captures
17. #industry
18. #better
19. #index
20. #price