Answer:
The question doesn't provide the options.
Explanation:
According to Merriam-Webster Dictionary a counterclaim is an opposing claim, meaning that this claim is made to rebut a previous claim, specially in legal aspects.
For example, after two drivers hit each other the first one sues the second one for injuries and damaging the car, so the second one counterclaims or sues back for similar injury claims. If sentence 3 has something like that, it is the correct answer.
