Let $A$ and $B$ be two non-empty subsets of a set $X$ such that $A$ is not a subset of $B$, then
Let $A$ and $B$ be two non-empty subsets of a set $X$ such that $A$ is not a subset of $B$, then
- A
$A$ is always a subset of the complement of $B$
- B
$B$ is always a subset of $A$
- C
$A$ and $B$ are always disjoint
- D
$A$ and the complement of $B$ are always non-disjoint
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