Suppose a friend of yours showed you the pro forma income statements for his startup and exclaimed excitedly that during its first three years of opera- tion, his firm will make a net income of $200,000 per year, which is just the amount of money, $600,000, that the firm will need to pay off a three-year loan. Explain to your friend why he might not actually have $600,000 in cash. even though his pro forma income statements say that he will earn that amount of money.