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The names of 6 students from section A, 7 students from section B and 8 students from section C were selected. The age of all the 21 students was different. Again, one name was selected from them and it was found that it was of section
B. What was the probability that it was the youngest student of the section B?

A 1/6

B 1/3

C 1/7

D 1/8

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