With Respect to Misrepresentation of Relevant Facts,how Is a Willful

With respect to misrepresentation of relevant facts,how is a willful omission with regard to relevant information during pre-contractual negotiations regarded in law?

A) as a false statement of fact that causes someone to enter a contract
B) as permissible because each party must look out for their own interests
C) as an error made by one or both parties that seriously undermines a contract
D) as a breach of the duty to disclose information without being prompted