Which one of the following could be an accurate listing of the members and facilitators of the two research teams?

Hi there, I got correct the people that are supposed to be in the green and red teams. Although how do we know Juana is the facilitator if it doesn't specify that it could be Juana or Mei, are we suppose to assume Juana is the facilitator since it states Olga is a facilitator and the first rule states they are supposed to be in different teams?