Sanjya and Saumya together can finish a work in 9 days. Sanjya can do the same job on his own in 15 days. The same work Saumya can do by himself in:

• A. 14 days
• B. \(15\frac{1}{2}\) days
• C. \(22\frac{1}{2}\) days
• D. 22 days