Evaluate the indefinite integral $$e$^$x$+$e$^$x$/2$dx$.$

Select one:

a$.$

$14(22)+14($e$2$x$$e$2$x$)+$C

b$.$

$12(+)+12($ex$+$e$$x$)+$C

c$.$

$12()+12($ex$$e$$x$)+$C

d$.$

$18(22)+$