Упрости выражение

\(\cfrac {c}{c^2+3c+9}-\cfrac {1}{c-3}+\cfrac {27}{c^3-27}\)

• \(-\cfrac{6}{c^2+3c+9}\)
• \(\cfrac{6}{c^2+3c+9}\)
• \(\cfrac{1}{c^2+3c+9}\)
• \(-\cfrac{1}{c^2+3c+9}\)