Given the following cash flow plot NPV vs i and tell me how many roots you find and where.
Year 0 : -$1,000 Cash Flow
Year 1 : $3,600 Cash Flow
Year 2 : -$4,280 Cash Flow
Year 3 : $1,680 Cash Flow
O a. roots at 3%, 16% and 28%
O b. roots at 0%, 20% and 40%
O c. roots at 5%, 10% and 15%
O d. roots at 0%, 30% and 60%