Сократите дробь: \(\frac{b^{3n}+b^{2n}+b^n}{b^{-3n}+b^{-2n}+b^{-n}}.\)

• \(b^{4n}\) \(\)
• \(b^{-4n}\)
• \(-1\)
• \(\frac{1}{b^3+b^2+b}\)