Yuri is a member of a cross-functional team at work. A few days after the group seemed to come to an agreement, a subgroup emerged that disagreed with the group's decisions. He is worried about the level of disenchantment within the group currently. This example illustrates which stage of the group development process?

A) Orientation
B) Disillusion
C) Acceptance
D) Delusion
E) Conflict and challenge