Mark against the correct answer in each of the following:
Question:
Mark $(\sqrt{)}$ against the correct answer in each of the following:
$\int e^{x} \sec x(1+\tan x) d x=?$
A. $e^{x}(1+\tan x)+C$
B. $e^{x} \sec x+C$
C. $e^{x} \tan x+C$
D. none of these
Solution:
