Упростите выражение \(\frac{x^2y-3x^2}{8y^3}\cdot \frac{2y}{xy-3x}\) .

• \(\frac{x}{4y^2}\)
• \(\frac{1}{4y^2}\)
• \(\frac{x^2}{4y}\)
• \(\frac{x^2}{4y^2}\)