Your company must decide to face one of three different projects. The required rate of return is established in 8% but it's expected inflation to remain relatively constant at 2,5%. The three alternatives are of different costs and different savings capacities each year, considering 6 years as possible to maintain the savings, as represented in the following table:

	Project A	Project B	Project C
Cost	4.500.000,00	5.000.000,00	3.200.000,00
Savings each year	1.180.000,00	1.225.000,00	876.000,00

a) Calculate the discount factor

b) Analyze each situation to determine what project could be best to select, justifying your decision by calculations.