In a group of ten, four members are given the responsibility of delegating work to the rest of the group members, in addition to their existing responsibilities. They receive a higher degree of warmth and encouragement as compared to the rest of the group members. In this case, which of the following statements is true?

a) The four members who have the added responsibility form the in-group
b) The members who receive the delegated work form the in-group
c) This case is an example in which the manager uses electronic brainstorming techniques.
d) This case is an example in which the manager displays the technique of upward appeal.