Представьте в виде дроби \(\frac{9a^2b^2}{5c^3}:\frac{45a^3b^3}{10c^4}.\)

• \(\frac{5ab}{2c}\)
• \(\frac{2c}{5ab}\)
• \(\frac{81a^5b^5}{c^7}\)
• \(\frac{5c}{2ab}\)