Which of the Following Is the Most Accurate Approximation of Normal

Which of the following is the most accurate approximation of normal adult testicular size (in centimeters) ?

A) 5 $\times$ 2 $\times$ 3
B) 2 $\times$ 3 $\times$ 3
C) 4 $\times$ 3 $\times$ 2
D) 5 $\times$ 7 $\times$ 7