Which of the following descriptions matches the concept of Integration Testing?

Evaluate the system's compliance with the business requirements and assess whether it is acceptable for delivery.

Validates the complete and fully integrated system. The purpose of a system test is to evaluate the end-to-end system specifications.

Individual units of a system are tested. The purpose is to validate that each unit of the system code performs as expected.

Individual units are combined and tested as a group. The purpose of this level of testing is to expose faults in the interaction between integrated units.