(4)If a company makes any contribution in contravention of the provisions of this section, the company shall be punishable with fine which may extend to five times the amount so contributed and every officer of the company who is in default shall be punishable with imprisonment for a term which may extend to six months and with fine which may extend to five times the amount so contributed.Explanation.—For the purposes of this section, “political party” means a political party registered under section 29A of the Representation of the People Act, 1951 (43 of 1951).