I believe the best answer here is A. it uses imperfect coordinating structure.
To make it parallel I would say to put it in this format: We can’t go back; to go forward is our only option. This makes the verbs the same.
If you are referring to "under the car" as a phrase, then it is an adverbial phrase that should show the place. If you are referring to "soccer" it functions as an adjective used to describe the central word of the cluster, that is, the ball.