Упростите выражение: \(1,2a^{-3}b^2*5a^2b^{-4}\) .

• \(\frac{6}{ab^2}\)
• \(\frac{6}{a^2b}\)
• \(\frac{6}{a^2b^2}\)
• \(\frac{6}{ab}\)
• \(6\)