Выполните умножение: \(\dfrac{a^2b}{12c}\cdot\dfrac{4c}{ab^2}.\)

• \(\dfrac{a}{3b}\)
• \(\dfrac{4a^2bc}{12ab^2c}\)
• \(\dfrac{a^2bc}{3ab^2c}\)
• \(\dfrac{3b}{a}\)