You are considering buying one of two sets of high-end video processing equipment. Panasonic is offering what you need at a first cost of $35,000 with a quarterly operating cost of $9000 and a salvage value of $5000 with an expected life of 8 years. Sony is offering what you need at a first cost of $40,000 with a quarterly operating cost of $6000 and a $7000 salvage value with an expected life of 6 years. The interest rate is 12% per year compounded monthly. What is the preferred option