of error under section 6213(g) of such Code to which the notices relate, on— (A) the number of mathematical or clerical errors noticed under the program and the dollar amounts involved, (B) the number of abatements of tax and the dollar amounts of such abatements, and (C) the effect of such pilot program on taxpayer response and adjustments or abatements to tax, with conclusions drawn about the effectiveness of certified mail, with and without return receipt, and any other recommendations for improving taxpayer response rates.