The management of the XYZ Corporation has decided to treat their staff to dinner. The choice of the restaurant is the Atrium (A), Blair's Kitchen (B), The Country Cookery (C), and Dino's Steak House (D). each of the 12 staff members is asked to submit the preference ballot listing his or her first, second, third, and fourth choices among these restaurants. The resulting preference ballots are as follows:

Ballot Ballot Ballot Ballot Ballot Ballot Ballot Ballot Ballot Ballot Ballot Ballot 1st choice A C B C C C A C A A C A 2\" choice B B D B B B B B B B B B 3'"1 choice C D C A A D C A C C D C 4-tll choice D A A D D A D D D D A D