Evaluate$3$xe$2$xdx

$.$

Select one:

a$.$

$32$xe$2$x$+34$e$2$x$+$C

b$.$

$32$xe$2$x$32$e$2$x$+$C

c$.$

$32$xe$2$x$+32$e$2$x$+$C

d$.$

$32$xe$2$x$34$e$2$x$+$C