What is the incremental cash flow in year 2 and year 6?

Two options are available for setting up a wireless meter scanner and controller. A simple setup is good for 2 years and has an initial cost of $14,000, no salvage value, and an AOC of $27,000 per year. A more permanent system has a higher first cost of $73,000, but it has an estimated life of 6 years and a salvage value of $15,000. It costs only $14,000 per year to operate and maintain. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. If the two options are compared using an incremental rate of return, what is the incremental cash flow in year 2 ? The incremental cash flow in year 2 is $