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