The following information is provided by Graham Company: Project A Project B Project C Project D Initial investment $422,000 $210,000 $552,000 $518,000 PV of cash inflows $578,000 $380,000 $814,000 $404,000 Payback period (years) 3.6 3.2 4.0 2.0 NPV of project $156,000 $170,000 $262,000 ($114,000) Which project has the highest profitability index? A. Project A B. Project B C. Project C D. Project D