Which of the Following Strategies in Relation to Conducting Onsite

Which of the following strategies in relation to conducting onsite meetings would likely be the most effective way of making offsite workers feel part of a team?

A) Advise them that a meeting is going to be held, but that they need not attend because they will be sent the minutes upon its completion.
B) Advise them that they are welcome to attend a meeting that is going to be held, and that they can submit agenda items for it, but that they are not required to do either because they will be sent the minutes upon the meeting's completion.
C) Where possible, include them in the meeting via speaker phone or web-conferencing.
D) Have separate meetings that offsite workers are required to attend, but have these less regularly than other team meetings.
E) None of these responses are correct.