Which of the following facts about National Medical Library is true

(A).The library's origins can be traced back to its initial conception as a departmental library with a small collection of books for the use of officers in the Directorate General of Indian Medical Services (DGIMS)

(B). The DGHS Library was gradually expanded and officially designated as the Central Medical Library in 1961.

(C). NML serves as the National Focal Point for the HELLIS Network in Southeast Asia back Since 1992.

(D).  It later assumed the status of the National Medical Library on April 1, 1966.