Выполните деление дробей: \(\frac{9a^3}{b^3} : \frac{3a^9}{b^6}\)

• \(\frac{3b^3}{a^6}\)
• \(\frac{27a^27}{b^18}\)
• \(\frac{3b^2}{a^3}\)
• \(\frac{27a^12}{b^9}\)