With free entry into Cave Rock at Lake Tahoe Nevada State Park, people park in undesignated areas, crowd the lakeshore, and trash the bathroom facilities. When the park charges an entry fee of $10 per vehicle and $20 per boat launch, fewer people visit, so parking is better, crowds get smaller, and there is less trash. Visitation to the park is _ with free entry and with the entry fees. nonexcludable and rival; excludable a private good; nonrival O nonexcludable and nonrival; non-excludable a club good; rival