Please explain your choice in detail.

18. Suppose that every one of a company's Long-Term Liabilities and Shareholders' Equity accounts reported on its Balance Sheet is completely unchanged from last period to this period. The company earned total Revenue of $50m and had total expenses of $20m over the period. What is its Net Cash Flows from Financing? (a) $0 (b) $20 (c) +$20 (d) $30 (e) +$30 (f) Not enough information (g) None of the other answers