Patti Sees a New Type of Cereal in the Grocery

Patti sees a new type of cereal in the grocery store that sounds intriguing. Even though the new cereal is more expensive than the kind she usually buys, she decides to try it anyway. However, after eating just one bowl Patti decides she does not care for the new cereal at all. What is likely to happen next?

A) She forces herself to finish the rest of the cereal, because she irrationally focuses on the sunk cost of purchasing it.
B) She throws the rest of the cereal away, because she irrationally spent money on something she had no information about.
C) She forces herself to finish the rest of the cereal, because she rationally computes the cost per bowl.
D) None of these are likely to happen for the reason stated.