Gamma Enterprises is evaluating two potential construction projects. The required rate of return is 12%.

Year	Project Build	Project Construct
0	$(110,000)	$(130,000)
1	$30,000	$35,000
2	$35,000	$40,000
3	$40,000	$45,000
4	$45,000	$50,000

a. Calculate the payback period for both projects. Which project is preferred based on the payback period?

b. Determine the net present value for each project. Which project should be selected based on the net present value?