Describe the book/tax difference resulting from each of the following transactions: (a) Firm A spent $430 or a business dinner attended by the firm’s vice president and a potential client. (b) Firm B borrowed $50,000 and invested the loan proceeds in tax-exempt City of Los Angeles bonds. This year, Firm B paid $2,800 interest on the loan and earned $3,500 interest on the bonds. (c) Firm C sent its president and several other key employees to Washington, D.C., to lobby a group of senators to enact legislation that would be extremely beneficial for the firm’s business. The cost of this trip was $7,400. While in the capital city, the president attended a "$10,000 a plate" fundraising dinner sponsored by one senator’s reelection committee.