Which Web Services pattern would you recommend they consider in building a scheme to accommodate this communication?

An investment company has purchased a number of small online business referral systems
that appeal to various niche demographics. The company wants to bring these networks
together in hopes of finding a broad, single theme and brand image for these groups before
they can do that, they need to get the users communicating with outside their current
networks. Which Web Services pattern would you recommend they consider in building a
scheme to accommodate this communication?

A.
Asynchronous Interactions

B.
PAOS Interactions

C.
Web Services Broker

D.
JMS Bridge