The boy cannot be sitting and walking at the same time.is the reasoning for what question and answer pair?

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Q: Can we conclude from "Young boy sitting in a lawn chair." that "The boy is walking in his yard."?
Options:
- yes
- no
- it is not possible to tell
A: no