Sooky has a spotter truck with a book value of $49,000 and a remaining useful life of five years. At the end of the five years the spotter truck will have a zero-salvage value. iSooky can purchase a new spotter truck for $129,000 and receive $31,900 in return for trading in its old spotter truck. The old spotter truck has variable manufacturing costs of $84,000 per year. The new spotter truck will reduce variable manufacturing costs by $25,900 per year over the five-year life of the new spotter truck. The total increase or decrease in income by replacing the current spotter truck with the new truck is: options: $129,000 decrease

$32,400 increase

$32,400 decrease

$31,900 increase

$31,900 decrease