$ 0 0 Competition Mode QuestionVariables x, y, and z are positive integers with an average of 10. If x y z, and if z x = 3, which of the following could be the median of x, y, and z ? I. 9 II. 10 III. 11A. I onlyB. II onlyC. III onlyD. I and II onlyE. I and II only