For This Pair of Items, Choose the Option That Best

For this pair of items, choose the option that best describes their relationship. I. the average size of particles that constitute silt
II. the average size of particles that constitute clay

A) Item I is larger than item II.
B) Item I is smaller than item II.
C) Item I is exactly or very approximately equal to item II.
D) Item I bears no relationship to item II.