Answer:
The correct option is B
Step-by-step explanation:
Sierra offers to sell a puppy to Alyssa for the amount of $800. And they did not discuss the ancestry of the dog but Alyssa believes that the dog is from champion line. So, agreed on the same.
But later on she discovered the fact the she has been overpriced. So, grounded on this she is not allowed to revoke the contract. As she made made a mistake regarding the value or the worth of the dog not on the material fact of the dog.