Which of the following statements BEST describes a Definitive Media Library (DML)?

A.
A secure location where definitive hardware spares are held

B.
A secure library wheredefinitiveauthorised versions of all software and back-ups are stored and protected

C.
A secure electronic library that contains all copies of softwareandlicences

D.
A secure library wheredefinitiveauthorised versions of all media Configuration Items (CIs) are stored and protected