Stele PLC considering Projects A and B, whose cash flows are shown below. These projects are mutually exclusive, equally risky, and not repeatable. What is the crossover rate for the projects?

r =8.5%
Year	0	1	2	3	4
CFS	$1,000	$400	$450	$250	$100
CFL	$3,000	$400	$600	$1200	$1,500

Select one:

a. 5.49%

b. 6.61%

c. 7.01%

d. 7.65%