allerySet X = letters in 'ALLOY'; set B = letters in 'LOYAL'. Compare:
AX = B
BX ≠ B because the words differ
CX and B have no common elements
DX ⊂ B but B ⊄ X
Answer & Solution
Correct answer: A. X = B
Both words contain the distinct letters A, L, O, Y. X = {A, L, O, Y} = B. Repetition of letters within a word doesn't change the set.
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