A tenant rents an apartment from a landlord. The landlord cannot constantly monitor how the tenant maintains the property. Taking extra care of the apartment (e.g., deep cleaning, promptly reporting minor issues) is costly in terms of time and effort for the tenant. Analyze why the tenant might choose a level of care for the apartment that is lower than what would be ideal for both the landlord and the tenant combined. In your analysis, distinguish between the tenant's private considerations and the total benefits that accrue to both parties.