【单选题】

Detailed information on more complex and specialized subjects may either be included in the basic Maintenance Manual or made available as separate documents at the option of the manufacturer and to the extent the manufacturer determines appropriatE.

A、Manufacturer determines specific range properly to describe sophisticated and professional information. The information can be put in Maintenance Maunal or other documents.
B、Detailed information on more intricate and specific subjects can be written in two ways: Maintenance Manual or individual documents. The two ways are dependent on manufacturer's option properly.
C、It is up to the manufacturer to decide where and to what extent to include detailed information about more sophisticated and professional topics, either in the common Maintenance Manual or in another new documents.