Your plan projects revenue of $5,000, $8,000, and $10,000 in years 1 through 3. Expenses are projected to be $9,000 for each of years 1 through 3. If your only funding need is the gap between revenue and expenses, which is the best estimate of your maximum cumulative funding need?

a) $0
b) $1,000
c) $4,000
d) $50,000