Tell whether each of the following transactions related to an office building is a revenue expenditure (RE) or a capital expenditure (CE). In addition, indicate whether each transaction is an ordinary repair (OR), an extraordinary repair (ER), an addition (A), a betterment (B), or none of these (N).
1. The hallways and ceilings in the building are repainted at a cost of $4,150.
2. The hallways, which have tile floors, are carpeted at a cost of $14,000.
3. A new wing is added to the building at a cost of $87,500.
4. Furniture is purchased for the entrance to the building at a cost of $8,250.
5. The air-conditioning system is overhauled at a cost of $14,250. The overhaul extends the useful life of the air-conditioning system by 10 years.
6. A cleaning firm is paid $100 per week to clean the newly installed carpets?