Question: Suppose you are given the following binary classification problem where + represents positive class and - represents negative class. Which one

Suppose you are given the following binary classification problem where "+"
represents positive class and "-" represents negative class. Which one of the following
value of k in k-nearest neighbors would give the LOWEST leave-one-out cross
validation accuracy?
a.5
b.4
c.3
d.1+,+
+,-
+,-
Suppose you are given the following binary classification problem where "+"

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