What’s a seven letter word for brain freeze?

You would like to rebuild the master boot record on your Windows 7 desktop computer. Which of these commands would you use in System Recovery Options / Command Prompt?

A) bootrec /fixmbr

B) fixboot

C) fixboot /fixmbr

D) bootrec /fixboot

E) fixmbr

F) Maybe this would be a good time to put the keyboard away and work on a crossword puzzle