Match the type of solution with the appropriate statement (use the drop-down box to select either A, B, C, D for each type) Expert system A Useful in situations where the level of unknown is low. Follows specified rules Supervised machine learning which are followed by the system B. Learns from the training dataset by iteratively making predictions on the data Unsupervised machine learning and adjusting for the correct answer. Big data CWork on their own to discover the inherent structure of unlabelled data. D.Can be a large collection of consumer transactions, logs, social media sensor and machine output etc