Each company, firm, corporation, person, association, partnership, or public utility shall furnish the tax commissioner in the returns prescribed by him all information required by law and all other facts and information which the commissioner requires to enable him to carry into effect the laws which he is required to administer, and shall make specific answers to all questions submitted by the commissioner.
The answers to such questions shall be verified by the signature of such person or by the president, secretary, superintendent, general manager, principal accounting officer, partner, or agent, and returned to the commissioner at his office within the period fixed by the commissioner.