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# DM-Groups and Lattice-Q15

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+1 vote

Let $[P(S),\small \supseteq]$ is a partial order relation defined on P(S) and S= {1,2,3,4}. Which of the following is the complement of {1,2}?

A. {3,4}

B. {1,2,3,4}

C. Ø

D. {1,2}