The Patient Had "Tubes Placed Bilaterally." PMHx

The patient had "tubes placed bilaterally." PMHx
Johnny's history is significant for tympanostomy tubes placed bilaterally when he was 2 years old. One tube left a persistent perforation in the tympanic membrane, so he had tympanoplasty at 3 years of age. He has not had any episodes of otitis media in the past 2 years.
Which is the correct breakdown and definition of the term bilateral?

A) bi (one) + lateral (out to the side) = one side
B) bi (side) + lateral (toward the middle) = toward the middle of the side
C) bi (side) + lateral (toward the side) = toward the side
D) bi (two) + lateral (out to the side) = both sides
E) bi (two) + lateral (toward the middle) = in the middle