The Exchange of E-Mail Between Companies in Different States Can

The exchange of e-mail between companies in different states can create personal jurisdiction in a law suit when:

A) the defendant also maintains an office in the forum state.
B) the defendant, at minimum, has employees that enter the forum state to conduct business.
C) the e-mail is an integral part of an ongoing business relationship even if no offices or personnel are within the forum state.
D) the e-mail specifically references a voluntary intention by the parties to submit to the forum state's personal jurisdiction