The dilemma

The studio lights are blinding. Millions of people will watch this when it airs. You've already won 250,000 and the host is waiting. You're 90% sure the answer is B, but if you're wrong, you drop all the way back to 32,000. No lifelines left. The host leans in. 'So, {{NAME}}... is that your final answer?'

Your options

1. Lock it in. 'Final answer.'
2. Walk away with the 250,000. Not worth the risk.
3. Switch to C. Something about B suddenly scares you. Better safe than confident.