Упростите выражение \(\frac{14a^2b}{3c}\cdot (-\frac{15ac^3}{21b^2})\cdot\frac{10}{a}.\)

• \(-\frac{100a^2c^2}{3b}\)
• \(-\frac{100a^2c^2}{3b^2}\)
• \(\frac{100a^2c^2}{3b}\)
• \(\frac{100a^2c^2}{3b^2}\)