Problem: How does the sentence end?

Steven bough tickets to the football game in the nosebleed section while Nelson bought 50-yard line tickets. 
OPTIONS:
- Steven was required to spend a lot of money.
- Nelson was required to spend a lot of money.
Answer: Nelson was required to spend a lot of money.
sentence: When Michael spilled red wine on the rug  OPTIONS:
- Michael apologized because it was owned by Adam.
- Adam apologized because it was owned by Adam.
complete: Michael apologized because it was owned by Adam.
The stains could not be removed with detergent, but the soap did the job.  The 
OPTIONS:
- detergent was tough in cleaning power.
- soap was tough in cleaning power.
soap was tough in cleaning power.
Input: Continue writing.

The norovirus was caught by Michael but Matthew was able to avoid it because, 
OPTIONS:
- Michael always washed their hands.
- Matthew always washed their hands.

Continued: Matthew always washed their hands.
Story needs to be completed:
The barber used the strap to sharpen the razors but not the scissors, since the 
OPTIONS:
- razors worked better after sharpening.
- scissors worked better after sharpening.

My choice:
razors worked better after sharpening.
Problem: How does the sentence end?

My old knives would not cut through the bones because the 
OPTIONS:
- knives were very dull.
- bones were very dull.
Answer:
knives were very dull.