Aruba self-registration with sponsorship is a solution best applied to which type of network?

a chain of auto part stores where employees are assigned mobile devices using a Mobile Device Manager (MDM) and public wireless is available for customers

a large corporate environment with hundreds of contractors requiring wireless access to printers and internet but no other guest access is allowed

a hotel where hundreds of guests are checked in and out of the building daily that may want access to wireless internet

a chain of coffee shops using in a public downtown area with a high amount of guest turnover needing access to public wireless