(1) For statements filed during each calendar year, each filing officer shall examine each statement filed with the filing officer under ORS 260.044, 260.057, 260.083, 260.112 or 260.118 (6) to determine whether the statement is sufficient. The filing officer shall examine statements under this section not later than 90 days after the end of each calendar quarter for statements filed during the previous calendar quarter.
(2) The filing officer may require any person to answer in writing and upon oath or affirmation before a judge, justice of the peace, county clerk or notary public any question within the knowledge of that person concerning the source of any contribution. The filing officer shall advise the person of the penalty for failure to answer.