Find the derivative of the function (30x^11 - 45x^6 - 10)/(5x²). Simplify your answer without negative exponents. Which of the following options represents the simplified derivative?
a) (66x^10 - 18x^5)/(5x²)
b) (66x^10 - 18x^5)/(5x³)
c) (66x^11 - 18x^6)/(5x²)
d) (66x^11 - 18x^6)/(5x³)