Упростите выражение \(-\sqrt{\frac{a^4b^2}{121c^8}}\) при \(b≥0.\)

• \(-\frac{a^2b}{11c^4}\)
• \(\frac{a^2b}{11c^4}\)
• \(-\frac{ab}{11c^4}\)
• \(\frac{ab}{11c^4}\)