Answer:
Short answer: the price goes up.
Step-by-step explanation:
Sellers get rich.
The point of the question is to show that supply and demand are related. If the supply goes up then the price will go down because the seller will need to get rid of what he has.
If the supply can't meet the demand then the price is in favor of the seller, and the price goes up. His price can go up because the demand will still be there and the seller might as well take advantage of it.