A

Explanation:

Public law governs relationships between individuals and the state and is typically divided into three main categories: constitutional law, administrative law, and criminal law. Constitutional law deals with the structure and powers of government, administrative law governs the actions of government agencies, and criminal law addresses offenses against the state. Option A (three) is correct based on this standard classification. Option B (four) and C (two) do not reflect the typical categorization. Option D is incorrect, as public law is indeed categorized. The answer “A” is as provided in the attachment.