A θ B means A is the sister of B, A Δ B means A is the father of B; A ∈ B means A is the brother of B, which of the following means that X is the aunt of Y?

A θ B means A is the sister of B, A Δ B means A is the father of B;

1.	A θ B means A is the sister of B, A Δ B means A is the father of B; A ∈ B means A is the brother of B, which of the following means that X is the aunt of Y?
A.	X θ D ΔY
B.	X Δ Y ∈ D
C.	X Δ D ∈ Y
D.	X ∈ D Δ Y
Answer» B. X Δ Y ∈ D

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A θ B means A is the sister of B, A Δ B means A is the father of B; A ∈ B means A is the brother of B, which of the following means that X is the aunt of Y?

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