Because Web servers are platform and application (71) ，they can send or request data fromlegacy or external application including database．All replies，once converted into (72) arkup language，can then be transmitted to a (73) ．Used in this way，Intranets can (74) lower desktop support costs，easy links with legacy application and databases and， (75) all，ease of use．

A．coupled

B．dependent

C．independent

D．related