Сократите дробь \(\frac{\sqrt[3]{m^2}+6\sqrt[3]{mn}+9\sqrt[3]{n^2}}{\sqrt[3]{m}+3\sqrt[3]{n}}.\)

• \(m^\frac{1}{3}+3n^\frac{1}{3}\)
• \(m^\frac{1}{3}+n^\frac{1}{3}\)
• \(m^\frac{1}{3}-n^\frac{1}{3}\)
• \(m^\frac{1}{3}-3n^\frac{1}{3}\)