Which section of a library is responsible for the arrangement of books and other reading materials on the shelves?

In which scenario would 'cost benefit analysis' be MORE appropriate than 'cost effectiveness analysis' for evaluating a library programme?

Assertion (A): In library management, technical functions such as acquisition and processing are often centralised, while user services are decentralised. Reason (R): Centralisation ensures uniform technical standards and efficient use of specialised expertise, while decentralisation of user services allows faster response to local user needs and better adaptation to community-specific requirements.