Problem Solving

For any \(3\) given numbers, which of the following is always equivalent to adding the \(3\) numbers together and then dividing the sum by \(3?\)

I. Ordering the \(3\) numbers numerically, from highest to lowest, and then selecting the middle number
II. Dividing each of the numbers by \(3\) and then adding the results together
III. Multiplying each number by \(6,\) adding the resulting products together, and then dividing the sum by \(9\)

A. I only
B. II only
C. I and II only
D. II and III only
E. None of the above

OA B