Marketing Solutions Inc

Marketing Solutions Inc. promises to employ Niki as a software engineer. In reliance on the promise, Niki quits her job with Online Ad Agency, but Marketing Solutions does not hire her. Most likely, Marketing Solutions is

A) liable to Niki under the concept of rescission.
B) liable to Niki under the doctrine of promissory estoppel.
C) liable to Niki under the preexisting duty rule.
D) not liable to Niki.