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# Klein Four Subgroups of $S_4$

ABSALG-LKX8N9

How many subgroups of $S_4$ are isomorphic to $\mathbb{Z}/2\mathbb{Z} \times \mathbb{Z}/2\mathbb{Z}$?

A

$0$

B

$1$

C

$3$

D

$4$

E

$6$