The Latin root-ord-or -ordin-refers to "order" or "rank in a series." The word subordinate is formed from -ord- and the Latin prefix sub-. Given this information and your knowledge of the Latin
Prefix sub-, which of the following is the likeliest meaning of subordinate ?

A. One who is lower in rank

B. One who is equal in rank

C. One who is highest in rank

D. One who is higher in rank