A club N with four members is shown below. N = {Alvin, Bob, Carla, Derick), abbreviated as N={A, B, C, D)
Assuming all members of the club are eligible, but that no one can hold more than one office, list and count the different ways the club could elect both a president and
a treasurer.
Choose the correct list of possible pairs of presidents and treasurers.
O A. AB, AC, AD, BA, BC, BD, CA, CB, CD, DA, DB, DC
OB. AA, BB, CC, DD
OC. AB, AC, AD, BC, BD, CD
OD. AA, AB, AC, AD, BA, BB, BC, BD, CA, CB, CC, CD, DA, DB, DC, DD
stions