Read the following context and choose the best option to answer the question.
Context: I had to wait in line this afternoon to fill my car up with gas . Right now you may be thinking that I must have gotten a bargain . Nope .
Question: Why would the person be waiting to buy gas ?
Options: 
- Gas is scarce at the time .
 - The gas station only has one person working .
 - Demand is high due to low prices .
 - There are discounts being offered .


Gas is scarce at the time .