[The following information applies to the questions displayed below) Stoll Co.'s long-term available-for-sale portfolio at the start of this year consists of the following Available-for-Sale Securities Company A bonds Company B notes Company C bonds Cost $533,600 159,310 661,900 Fair Value $492,000 150,000 641,950 Stoll enters into the following transactions involving its available-for-sale debt securities this year. Jan. 29 Sold one-half of the Company B notes for $78,430. July 6 Purchased bonds of Company x for $129,800. Nov. 13 Purchased notes of Company Z for $267,100. Dec. 9 Sold all of the bonds of Company A for $524,100. The fair values at December 31 are B, $82,500; C, $609,100,X, $118.000; and Z. $279,000 [The following information applies to the questions displayed below) Stoll Co.'s long-term available-for-sale portfolio at the start of this year consists of the following Available-for-Sale Securities Company A bonds Company B notes Company C bonds Cost $533,600 159,310 661,900 Fair Value $492,000 150,000 641,950 Stoll enters into the following transactions involving its available-for-sale debt securities this year. Jan. 29 Sold one-half of the Company B notes for $78,430. July 6 Purchased bonds of Company x for $129,800. Nov. 13 Purchased notes of Company Z for $267,100. Dec. 9 Sold all of the bonds of Company A for $524,100. The fair values at December 31 are B, $82,500; C, $609,100,X, $118.000; and Z. $279,000