CompTIA Exam Questions

What command entered into a bash initialization file will have bash recognize vi keystrokes after lo

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

A.
history-pvi

B.
allas emacs=vi

C.
HISTCMD=vi

D.
set -ovi

E.
unset emacs