You are in radi estave ngent thinking of placing a sign advertiaing your services at a local bus stop. The sign wil cost $4,000 and wel be posted for one yoar: You axpect that it wet pererate abdtional revenue of Stab a mocth. What is the pujbock period? The peybsck period is montere. (Round to one decimal place.) a. What are the profitability indexes of the projects? b. What should Fabuloes Fabricators do? a. What are the protitabkity indexes of the projects? The profitability index for contract A is. (Round to two decimal olaces.) Data table (Click on the following icon in order to copy its contents into a spreadsheet.)