Please the workings should be legible

oldob. For each utility function, determine what bundle of goods is more preferred. (a) U(X1, X2) - 3x1X2: (1,6) or (3,3) (b) U(x, y) = 3x + 12y: (1,6) or (3,3) (c) U(X1, $2, 13) - 2x; 5x3x3: (3,3,3) or (1,5,1)