Which of the following is not a feature of DBMS?

Step 1: DBMS (Database Management System) is designed to manage data efficiently and securely. It ensures data integrity, minimizes redundancy, and supports multi-user access. Step 2: Option A (Minimum duplication and redundancy) is a key feature of DBMS, as it reduces data anomalies and storage waste. Step 3: Option B (High-level of security) is also a feature, as DBMS includes access control, encryption, and user authentication. Step 4: Option C (Single-user access only) is not a feature of DBMS, as modern DBMS supports concurrent access by multiple users. Step 5: Option D (More than one of the above) is incorrect because only one option (C) is not a feature. Step 6: Option E (None of the above) is incorrect because Option C is not a feature of DBMS.