The following expenditures were incurred during the year:
1. Paid $4,000 for an overhaul of an automobile engine.
2. Paid $20,000 to add capacity to a cellular phone company’s wireless network.
3. Paid $200 for routine maintenance of a manufacturing machine.
4. Paid $10,000 to remodel an office building.
5. Paid $300 for ordinary repairs

Required:
Classify the following expenditures as either capital or revenue expenditures.