Упростите выражение \(\frac{3m^2}{2n^2} : \frac{9m^6}{8n^8}.\)

• \(\frac{4n^6}{3m^4}\)
• \(\frac{4n^4}{3m^3}\)
• \(\frac{27m^8}{16n^{10}}\)
• \(\frac{4m^6}{3n^4}\)