What values will list$2$ contain after the following code executes?

list$1=[1,2,3]$

list$2=[$item $+1$ for item in list$1]$

Question $2$Select one:

a$.$

$[1,2,3]$

b$.$

$[2,3,4]$

c$.$

$[6,7,8]$

d$.$

$[[1,2,3],[2,3,4],[3,4,5]]$