(A) thick wire placed at the bottom of the slots
(B) thick wire placed at the top of the slots
(C) thin wire placed at the top of the slots
(D) thin wire placed at the bottom of the slots
(A) thick wire placed at the bottom of the slots
(B) thick wire placed at the top of the slots
(C) thin wire placed at the top of the slots
(D) thin wire placed at the bottom of the slots
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