Topographical Engineers,Inc

Topographical Engineers,Inc.,which is new to its business,offers its services at less than half their possible market price to United Road Crew Construction,Inc.,which knows the services' value.United's decision to accept the offer without commenting on the price could be justified by

A) the concept of unconscionability.
B) the doctrine of promissory estoppel.
C) the principle of freedom of contract.
D) the Statute of Frauds.