The profitability index for a project costing $51,000 and returning $18,000 anmally for 4 years at an opportunity cost of capital of 10% is: 1.412 0.119 0.353 3.529 What is the NPV of a project that costs $420,000 and returns S105,000 annually for 4 years if the opportunity cost of capital is 10%? $87,164 -$87,164 SO $420,000