Vanderheiden Inc. is considering two average-risk alternative ways of producing its patented polo shirts. Process S has a cost of $9,000 and will produce net cash flows of $6,000 per year for 2 years. Process L will cost $12,000 and will produce cash flows of $5,000 per year for 4 years. Both projects can be repeated if needed. No inflation is expected over the next 4 years. If Vanderheidens WACC is 10%, what is the common life NPV of project S and L respectively? Which one is the most profitable project?