Interim covers—also called binders or cover notes—are legal proof of temporary coverage. Because they function as contracts, any additional terms the insurer wishes to impose must be clearly written and communicated to the insured at the time coverage is bound. Courts consistently require that policy terms be in writing to be enforceable, especially when modifying or restricting standard coverage.

Option B is incorrect because verbal instructions can lead to disputes and are not enforceable under contract law or statutory requirements. Option C is incorrect because statutory conditions apply automatically but do not add insurer-specific terms. Option D is unrelated—interim covers exist precisely to provide immediate insurance before the policy is issued.

Therefore, if the insurer wants additional conditions or limitations to apply, they must be set down in writing as part of the interim contract, making A the correct answer.