The average age of 30 students of a class is 14 years 4 months. After admission

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The average age of 30 students of a class is 14 years 4 months. After admission of 5 new students in the class the average becomes 13 years 9 months. The youngest one of the five new students is 9 years 11 months old. The average age of the remaining 4 new students is :

Options:

A . 10 years 4 months

B . 12 years 4 months

C . 11 years 2 months

D . 13 years 6 months

Answer: Option A

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