A professor has been contacted by four not-for-profit agencies that are willing to work with student consulting teams. The agencies need help with such things as budgeting, information systems, coordinating volunteers, and forecasting. Although each of the four student teams could work with any of the agencies, the professor feels that there is a difference in the amount of time it would take each group to solve each problem. The professor's estimate of the time, in days, is given in the table below.

	Projects
Team	Budgeting	Information	Volunteers	Forecasting
A	29	36	25	23
B	30	18	31	31
C	28	42	22	32
D	43	39	40	38

Let X_ij denote if team i (A=1,B=2,C=3,D=4) is assigned to project j (Budgeting =1, Information = 2, Volunteers =3, Forecasting = 4)

If a team can be assigned to more than one project, then, in the optimal assignment, which team(s) would be used exactly once?

Group of answer choices

D

B and A

B

A

C