Phaeton Inc. is trying to decide whether it should replace a five-year-old piece of manufacturing equipment with a new machine. When conducting the incremental analysis related to this decision. Phaeton should consider all of the following amounts except
a) the book value of the old equipment.
b) the variable manufacturing costs associated with the old machine.
c) the cost of the new machine.
d) any amount received from the sale of the old machine.