Following is a portion of the investments footnote from the 2019 10-K report of Bancfirst Corporation (in thousands), related to held-to-maturity securities. The following table summarizes the amortized cost and estimated market values of securities held for investment: - k Gross Unrealized Gains Amortized Cost Gross Unrealized Losses Estimated Market Value (Dollars in thousands) & December 31, 20194 U.S. Treasury and other Federal agencies States and political subdivisions Total December 31, 2018 U.S. Treasury and other Federal agencies $ 607 e 11,379 e $11,986 e $ 482 672 $ 1154 [ $ -4 (7) $ (7) $ 6552 11,4394 $12,094- States and political subdivisions Total $ 781 15,635 e $16,416 2 $ 594 2222 $ 281 1. $ -4 (8) $_(8) $ 840 15,8494 $16,6894 Required: a. What amount does Bancfirst report on its balance sheet at December 31, 2019, for these held-to- maturity securities?- b. Calculate the unrealized gains or losses on these securities at December 31, 2019. How do these unrealized gains or losses affect the 2019 balance sheet and the 2019 income statement?- C. If these held-to-maturity securities had instead been classified as available-for sale, how would Bancfirst's 2019 balance sheet and income statement been different