What is the present value of the following series of cash flows discounted at 18 percent: $45,000 now; $60,000 at the end of the first year; $70,000 at the end of year the second year; $0 at the end of the third year; and $95,000 at the end of the fourth year? O a) $165,356.20 Ob) $172,830.76 O c) $195,120.31 O d) $203,940.30