instruction:
You are given a sentence, a question and two answer options ('A' and 'B'). Your task is to find the **incorrect** answer (return the string of the incorrect option, not A/B).
question:
Sentence: A hollow cannonball and a solid cannonball made of the same material and diameter are shot with the same force from a cannon. Question: Which ball will have a lower acceleration? (A) Hollow cannonball (B) Solid cannonball
answer:
Hollow cannonball


question:
Sentence: A bathroom counter isn't as rough as a kitchen counter. Question: Which surface will cause a tape ball to get hotter when rolled across it? (A) bathroom counter (B) kitchen counter
answer:
bathroom counter


question:
Sentence: A microphone rolling across a chair makes it get hotter then one rolling across a stage. Question: Which surface is the most smooth? (A) stage (B) chair
answer:

chair