Сократите дробь \(\frac{\sqrt{2a}-\sqrt{2b}}{3\sqrt{a}-3\sqrt{b}}.\)

• \(\frac{1}{\sqrt{a}-\sqrt{b}}\)
• \(\frac{1}{\sqrt{a-b}}\)
• \(\frac{1}{3}\)
• \(\frac{\sqrt{2}}{3}\)