Find the integral of u⁵ with respect to u, where u ranges from -6 to coss). Which of the following options correctly represents the integral?

A) ∫u⁵)du from -6 to coss)
B) ∫u⁵)du from -6 to coss)
C) ∫u⁵)du from -6 to coss)
D) ∫u⁵)du from -6 to coss)