Don contracts with Jan to paint Jan's townhouse while she's on vacation. By mistake, Don paints Mick's townhouse. Mick sees Don painting but says nothing. From whom can Don recover?

a$.$ Jan, because she was the party with whom Don contracted

b$.$ Jan, under the theory of quasi contract

c$.$ Mick, under the theory of promissory estoppel

d$.$ Mick, under the theory of quasi contract