Chapter 10 Check Point Answer the following questions. Please ensure to use the Author, YYYY APA citations with any content brought into the assignment.1. What are Anomalies/Outliers? And what are some variants of Anomaly/Outlier Detection Problems?2. What are some Challenges and Work Assumptions of Anomaly Detection?3. Explain the Nearest-Neighbor Based Approach and the different ways to Define Outliers.4. Explain the Density-based: LOF Approach.5. Provide the General Steps and Types of Anomaly Detection Schemes.Need answers to each question with no plagrism