12. (I point) Blue Ridge Designs is considering the purchase of a security system. There are two options. The GEB7 costs $30,000 today, will cost $1,500 per year for eleven years to operate and will be sold for $6,000 in eleven years. The SJB4 costs $42,000 today, will cost $1,400 per year for thirteen years to operate and will be sold for $7.500 in thirteen years. The equivalent annual cost of the worse choice is Use a discount rate of 6% pa a. 4.903.03 b. 5,341.83 c. 5,598.08 d.5.747.12 6,365.00