A) \[P=\{1,2,3\}\] and \[Q=\{1,\,\,2,\,\,3,\,\,4,\,\,5\}\]
B) \[P=\{a,b\}\] and \[Q=\{a,b,c\}\]
C) \[P=\{s\}\] and \[Q=\{m,n,s\}\]
D) \[P=\{l,m,n\}\] and \[Q=\{l,m,1,2,3\}\]
E) None of these
Correct Answer: D
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