An asset costs $110,000 to buy. It also incurs a charge of $2500 for set up and $1200 for delivery. Annual operation and maintenance contract for the life of the asset is $1500. The salvage value at the end of the useful life of 5 years is $3000. What is the estimated book value of the asset at the end of 4th year. $0 $25,440 $22140 $25140