Which of the following accurately describe the process of digitisation in libraries?

A. It requires adherence to metadata standards for discoverability.

B. It involves converting analog materials to digital formats.

C. It ensures permanent access to all digital content without preservation efforts.

D. It involves selecting suitable hardware and software for the process.

E. It requires to get permission from National Digital Library of India (NDLI).

Choose the most appropriate answer from the options given below: