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In a city, three daily newspapers A, B, C are published. 42% of the people in that city read A, 51% read B and 68% read C, 30% read A and B, 28% read B and C , 36% read A and C , 8% do not read any of the three newspapers. The percentage of persons who read all the three papers is

A

`25%`

B

`18%`

C

`20%`

D

`30%`

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A
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