在强酸性溶液中能大量共存的无色透明离子组是[ ]

A．K⁺、Na⁺、NO₃^-、MnO₄^-　　　

B．Mg²⁺、Na⁺、Cl^-、SO₄^2- 　　

C．K⁺、Na⁺、Br^-、Cu²⁺　　　 　

D．Na⁺、Ba²⁺、OH^-、SO₄^2-

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