If a person fails to comply with a civil investigative demand duly served on the person, the attorney general may file in the district court in the county in which the person resides, is found, or transacts business or in a district court of Travis County and may serve on the person a petition for an order of the court for enforcement. If the person transacts business in more than one county and the attorney general elects not to file the petition in Travis County, the petition must be filed in the county of the person’s principal office or place of business in the state or in any other county as may be agreed on by the person and the attorney general.