Differentiate.
y = {8x}/{5 - tan(x) }
A) y' = 40 - 8 tan(x) - 8x - sec²(x)
B) y' = 8 - {40}/{tan(x) } + 8x + sec²(x)
C) y' = 8 - 8 tan(x) - 8x - sec²(x)
D) y' = 40 - 8 tan(x) - 8x + sec²(x)