Find the most general antiderivative of the function f(x)=6e^(x)+8sec2x. What is the antiderivative of this function?
A) 6e^(x)+8tan(x)+C
B) 6e^(x)+8sec2x+C
C) 6e^(x)+8tan(x)+D
D) 6e^(x)+8sec2x+D