What is the sum of the digits of the positive integer \(n\) where \(n < 99?\)

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What is the sum of the digits of the positive integer \(n\) where \(n < 99?\)

(1) \(n\) is divisible by the square of the prime number \(y.\)
(2) \(y^4\) is a two-digit odd integer.

Answer: C

Source: Manhattan GMAT
Source: — Data Sufficiency |