Factor x cubed plus x squared plus x plus 1 by grouping. What is the resulting expression?
A
open paren x squared plus 1 close paren times open paren x plus 1 close parenB
open paren x cubed plus 1 close paren times open paren x plus 1 close parenC
open paren x squared close paren times open paren x plus 1 close parenD
open paren x squared plus 1 close paren times x