In which of the following cases exception of mistake cannot be granted?
When the state of things believed to exist would have justified the act done.
The mistake is reasonable
The mistake relates of fact and not of law.
The mistake relates of law and not of fact.
It is to be remembered that ‘mistake of law’ is no defence, but ‘mistake of fact’ is. Everybody is bound to know the law of the land, and ignorance of the law is no excuse. This is based on the assumption that if a person exercises due care and diligence (e.g., by consulting a lawyer), he would know the law. Hence the correct option is d.