Sam Runs a Proprietorship That Generated $75,000 in Profits in 20x0

Sam runs a proprietorship that generated $75,000 in profits in 20x0. Included in these profits are: a) $10,000 - amortization expense; b) $5,000 - reasonable bad debt expense; c) $55,000 - cost of goods sold (closing inventory at market value) ; and $8,000 - meals and entertainment with clients. Sam's capital cost allowance has been accurately calculated at $8,500 for the year. How much is Sam's business net income for tax purposes?

A) $73,500
B) $75,000
C) $80,500
D) $89,000