Which statement best describes Elastic Load Balancing?

A service that monitors applications and automatically adds or removes capacity from resource groups in response to changing demand

A service that provides data for monitoring applications, optimize resource utilization, and respond to system$-$wide performance changes

A service that distributes incoming traffic across multiple targets, such as Amazon EC$2$ instances

A service that provides the capability to create, manage, and scale a distributed in$-$memory or cache environment in the cloud