Each handler shall maintain such records of olives acquired, held, and disposed of by such handler as may be prescribed by the committee and needed by it to perform its functions under this subpart. Such records shall be retained for at least two years beyond the crop year in which the transaction occurred. The committee, with the approval of the Secretary, may prescribe rules and regulations to include under this section handler records that detail advertising and promotion activities which the committee may need to perform its functions under § 932.45(a).