Which of the Roles Described Here Is More of an Informal

Multiple Choice

Which of the roles described here is more of an informal role than a formal role?

A) Zyna's role of balancing the checkbook as the club's treasurer
B) Cecelia's role of taking notes as the club's secretary
C) Francisco's role of maintaining order as the club's parliamentarian
D) Jenny's role of "taskmaster" because of her ability to maintain focus and not be sidetracked by frivolity and side talk