Final answer:
The correct steps to check for the type of Enterphone in an MDU building are to identify the MDU, verify the security system, and check for an intercom.
Step-by-step explanation:
The correct list of steps to check for the type of Enterphone in an MDU building is:
- Identify MDU
- Verify security system
- Check for intercom
- First, you need to identify the MDU (Multi-Dwelling Unit) building you are checking. Then, you should verify the security system installed in the building. Finally, check for an intercom system, which is the type of Enterphone commonly used in MDU buildings.