Piper owns a vacation cabin in the Tennessee mountains. Without considering the cabin, she has gross income of $65,000. During the year, she rents the cabin for two weeks for $2,500 and uses it herself for four weeks. The total expenses for the vear are $10,000 mortgage interest; $1,500 property tax; $2,000 utilities, insurance, and maintenance; and $3,200 depreciation. If an amount is zero, enter " 0 ". a. What effect does the rental of the vacation cabin have on Piper's AGI? Piper reports rental income of $ and rental expenses of 4 for AGI. b. What expenses can Piper deduct, and how are they dassified (i.e., for or from AGI)