Let $A = \{1, 2, 3, 4, 5, 6\}$. Insert the appropriate symbol $\in$ or $\notin$ in the blank space:
$4 \dots A$

  • A
    $4 \in A$
  • B
    $4 \notin A$
  • C
    $4 \subset A$
  • D
    $4 \supseteq A$

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