Which of the following is true about Data Mining

(A). Data mining is the process of searching and analyzing a large batch of raw data in order to identify patterns and extract useful information.

(B). The Decision Trees technique Uses a series of branching questions to classify or predict outcomes.

(C). Predicting a patient’s risk by matching symptoms to past cases is the example of K-Nearest Neighbors (KNN)

(D). Predictive Analysis Builds statistical or machine-learning models on historical data to forecast future values (e.g., sales projections).