Yesterday, Maya stated that Overboard stock was only worth $$12$ a share and since it was selling for $$15$ a share, she declared it overpriced and refused to buy any shares. This morning, she learned that she is inheriting $3,500$ shares of Overboard stock from her grandmother. Suddenly, she is saying that Overboard stock is a great buy at $$15$ and is probably worth at least $$17$ a share. This is an example of which one of the following?

Question $49$ options:

snakebite effect

money illusion

regret aversion

sunk cost fallacy

endowment effect