\text { 5. An antiderivative of } g^{\prime}(x)=3 \sec x \tan x+x^{4} \text { , is: } \text { A) } 3 \sec x+4 x^{3} \text { B) } 3

\sec x+x^{5} \text { C) } 3 \tan x+\frac{x^{5}}{5} \text { D) None of them }