Сократите дробь: \(\frac{12^{2n+1}}{9^{n-1}\cdot16^{n+1}}.\)

• \(6\frac{3}{4}.\)
• \(8\frac{4}{6}.\)
• \(4\frac{2}{6}.\)
• \(3\frac{2}{4}.\)