Problem: How does the sentence end?

I wanted add some color to the bedroom so I chose red pillows over grey pillows because the 
OPTIONS:
- red pillows were vibrant.
- grey pillows were vibrant.
Answer: red pillows were vibrant.
sentence: Monica loved to drink colas while Elena only stuck to water as their drink.  OPTIONS:
- Monica was health-conscious.
- Elena was health-conscious.
complete: Elena was health-conscious.
When traveling by airplane, Maria flew first class while Lindsey flew economy, because 
OPTIONS:
- Maria does not have a lot of money.
- Lindsey does not have a lot of money.
Lindsey does not have a lot of money.
Input: Continue writing.

Kayla made it very clear to Monica that they wanted nothing to do with them, but 
OPTIONS:
- Kayla still didn't leave them alone.
- Monica still didn't leave them alone.

Continued: Monica still didn't leave them alone.
Story needs to be completed:
The platinum was sold and the money realized could not cover the cost of the car. The 
OPTIONS:
- platinum is pretty costly.
- car is pretty costly.

My choice:
car is pretty costly.
Problem: How does the sentence end?

Erin knew that Victoria designed circuit boards and would make one for 
OPTIONS:
- Erin for a nominal fee.
- Victoria for a nominal fee.
Answer:
Erin for a nominal fee.