KNN Skill test Q.13

Could someone explain the solution
[https://www.analyticsvidhya.com/blog/2017/09/30-questions-test-k-nearest-neighbors-algorithm/]

13) Which of the following value of k in k-NN would minimize the leave one out cross validation accuracy?

A) 3
B) 5
C) Both have same
D) None of these

Solution: B

5-NN will have least leave one out cross validation error.

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