What is the antecedent for the pronoun "they" in the following passage? The bikes went through the hedges and the garage door, but they did not need many repairs.

A. The bikes
B. The hedges
C. The garage door and the hedges
D. The antecedent is unclear.
If you get it right you get 100 points and a brainliest

its c its is a mixture of gases

"i have always loved contemporary art and made it a general goal to work within the field. after a few nonprofit internships at museums and galleries, i decided to try the for-profit art world and was offered a job as the ad assistant at the magazine. i much prefer the pace of the for-profit art community and have stayed with the company for three years, with a promotion to an account manager last spring."

i just did this and got a 100.