Вычислите \(\frac{4}{\sqrt3+1}+\frac{2}{\sqrt3-2}-\frac{6}{\sqrt3-3}.\)

• \(\sqrt3-3\)
• \(\frac{1}{2-\sqrt3}\)
• \(2-\sqrt3\)
• \(\sqrt3-2\)
• \(3+\sqrt3\)