K-nearest neighbour algorithm

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K-Nearest Neighbor Algorithm Below are the data points of classes A and B. Also, there is an unknown test data point for which the class is unknown. Use k-nearest neighbour algorithm to classify the unknown point as one of the two classes. Class A = [(1,1), (2,1), (4,1), (2,2), (1,2.5)] Class B = [(3,1), (3, 1.5), (3, 2.5), (4,4), (2,4)] Test points = (3.8, 1.2) k = 3