In relation to the law of misrepresentation, which of the following statements is incorrect?

In general, silence cannot amount to a misrepresentation.

A misrepresentation is not actionable unless it induced the claimant to contract.  

An honest statement of opinion by a layman cannot amount to a misrepresentation.

A person cannot be liable for misrepresentation, if the truth of the statement could be determined by the misrepresentee making reasonable enquiries.