The correct answer is A since 1 2/3 is 20/12, 1 1/2 is 36/12, 1 1/4 is 15/12, and 1 7/12 is 19/12, so that means that Ryan has the least with 15/12, Jacob has the second least with 19/12, Cole has the third least with 20/12, and Gus has the most with 36/12