What category is my finished basement for a rental property in depreciation process?

[m_phalanx]

I have the basement of my rental property finished last year. Including carpet, adding bathroom, framing, etc...I am working on depreciation. Only 3 options for the  question categorize this asset? 1.Rental Real Estate 2. Appliances, carpet, furniture 3.Land improments . Which one is right?

Also where can I enter depreciation that already occured in 2015?

[Carl]

It's classified as Residential Rental Real Estate and will be depreciated over 27.5 years.