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 stick of gum that is slid across a classroom desk travels pretty slow compared to a stick of gum that is pushed across a home office desk. Question: Which surface is the most rough? (A) classroom desk (B) home office desk
answer:
home office desk


question:
Sentence: A knob rolled across a wooden table travels at a lower rate of speed then one rolled across a metal table. Question: Which surface provides more friction to the knob? (A) wooden table (B) metal table
answer:
metal table


question:
Sentence: Linda and Thomas decide to walk to the park.  Linda looks around and walks at a more leisurely pace while Thomas walks briskly. Question: Who takes longer to reach the park? (A) Linda (B) Thomas
answer:

Thomas