LPI Exam Questions

What command entered into abash initialization file wil…

Many people like the vi text editor but the default bash command line editor recognizes emacs keystrokes. What command entered into abash initialization file will
have bash recognize vi keystrokes after login?

A.
history -p vi

B.
alias emacs=vi

C.
HISTCMD=vi

D.
set -o vi

E.
unset emacs