Question 12 (5 points) The annual equivalent costs for challenger and defender are given as follow: n AEC-Defender AEC-Challenger 1 $2,800 $6,000 2 $2,300 $4,100 3 $2,600 $4,500 4 $1,900 $5,000 5 $2,200 $5,200 Using the finite planning horizon of 6 years, apply the present worth analysis to determine (jo, 1), (j, 2), (j,3) Assume i=15%