5 x 1/4 = 1 1/4 or 1.25
4 x 1/2 = 2
1.25 + 2 = 3.25 or 3 and 1/4
Clearly

corresponds to a point on the fourth "circle" in the plane.

is a rotation of 120 degrees counter-clockwise relative to the positive side of the horizontal axis, which corresponds to a clockwise turn of 360 - 120 = 240 degrees.
This means (C) is the answer.
Bekzod makes 1.5 liters of lemonade and drinks it all during the afternoon. This is the only one of the examples given that would ultimately equal zero.