Сократите дробь \(\frac{2\sqrt{x}-3\sqrt{y}}{4x-9y}.\)

• \(\frac{1}{2\sqrt{x}-3\sqrt{y}}\)
• \(\frac{1}{2\sqrt{x}+3\sqrt{y}}\)
• \(2\sqrt{x}+3\sqrt{y}\)
• \(\frac{\sqrt{x}-\sqrt{y}}{2x-3y}\)