Carrie is from the marketing department and she has become increasingly upset with the attitude of the production member of the project team, Andrew. He seems to either ignore her opinions or make disparaging comments every time she speaks, usually referring to marketing in an unpleasant way. Which stage of group development is the project team addressing, as evidenced by the interactions of Carrie and Andrew?

a. Norming

b. Performing

c. Storming

d. Adjourning