Final answer:
The IRS specifies depreciation durations as 7 years for equipment and furniture, 5 years for electronics, 27.5 years for residential buildings, and 39 years for commercial buildings. Land is not subject to depreciation as it does not have a determinable useful life.
Step-by-step explanation:
Depreciation is an accounting method of allocating the cost of a tangible asset over its useful life. In the context of the Internal Revenue Service (IRS), there are specific durations for different types of assets. According to the IRS:
- Office equipment and furniture are typically depreciated over 7 years.
- Electronics, such as computers and related equipment, are generally depreciated over 5 years.
- Residential buildings are depreciated over 27.5 years.
- Commercial and industrial buildings are depreciated over 39 years.
- Land is not depreciable as it does not wear out, become obsolete, or get used up.
Therefore, the correct answer to the student's question is: a) 3, 5, 27.5, not depreciated