Question: i . A ( A _ id , A _ attr 1 ) with primary key ( A _ id ) ii . A (

i. A(A_id, A_attr1) with primary key (A_id)
ii. A(A_id, B_id, A_attr1) with primary key (A_id) and foreign key B_id
iii. B(B_id, A_id, B_attr1) with primary key (B_id) and foreign key A_id
iv. B(B_id, B_attr1) with primary key (B_id)
i and iii
i and iv
ii and iii
ii and iv
i. A(A_id, A_attr1) with primary key (A_id) ii. A(A_id, B_id, A_attr1)

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