please solve these questions with full explanations. thank you!

51. Henry Company's Accounts Receivable increased by $800 during the year. If they also reported Net Credit Sales of $29,800, how much cash was received from their credit customers? A) $26,400. B) $29,000. C) $29,800. D) $30,600. E) $32,400. 56. Dennis Company reported that its bonds with a par value of $50,000 and a carrying value of $57,000 are retired, resulting in a loss of $3,000. The amount to be reported under cash flows from financing activities is: A) $ (3,000). B) $(60,000). C) $(57,000). D) $(50,000) E) Zero. This is an investing activity