Two alternatives are being considered for a continuing manufacturing process. Machine A has an initial cost of $900 and a salvage value of $200 after three years of work. Machine B has an initial cost of $1800 and a salvage value of 500 after its useful life which is 8 years of work. Assume operating costs for Machine A and B are 400 and 300 respectively. If the interest rate is assumed to be 10%, what would be your suggestion? Select one: A. Selecting machine A B. Selecting machine B C. Machines are indifferent