XVIII. The National Building Code and its implementing rules provide, inter alia, that operators of shopping centers and malls should provide parking and loading spaces, in accordance with a prescribed ratio. The Solicitor General, heeding the call of the public for the provision of free parking spaces in malls, filed a case to compel said business concerns to discontinue their practice of collecting parking fees. The mall owners and operators oppose, saying that this is an invalid taking of their property, thus a violation of due process. The Solicitor General justifies it, however, claiming that it is a valid exercise of police power. Could the mall owners and operators be validly compelled to provide free parking to their customers? (4%)