⟩ Which of the following statements is true?
(a) Backup copies of drawing files are saved in the "Support" folder.
(b) Backup copies of drawing files are saved in a folder set by the user.
(c) When a drawing is initially saved a backup copy is made with a .BAK
extension. This can be renamed as a .DWG at a later date.
(d) When a drawing is saved for the second time a backup copy is made with
a .BAK extension. This can be renamed as a .DWG at a later date.