Container (i) : copper coin and iron nail
Container (ii) : steel nail and aluminium earring
Container (iii) : marble and gold coin
Container (iv) : nickel coin and steel nail
She can use a magnet to separate the objects in containers __________ .
(A) (i) & (ii)
(B) (i), (ii) & (iii)
(C) (i), (ii) & (iv)
(D) (i), (ii), (iii) & (iv).
it should be option b?