In a series of chemical test reactions, the following observations were made when several metallic element samples were treated with 3.00 M hydrochloric acid solution. Zn: metal dissolves, hydrogen gas is emitted. Cu: no reaction. Ag: no reaction. Mg: metal dissolves, hydrogen gas is emitted. Mn: metal dissolves, hydrogen gas is emitted. Which statement below is true?
A) Mg, Mn, Zn are more reactive than Ag, Cu; but less reactive than H2.
B) Mg, Mn, Zn are less reactive than Ag, Cu; but more reactive than H2.
C) Mg, Mn, Zn are more reactive than Ag, Cu, and H2.
D) Mg, Mn, Zn are less reactive than Ag, Cu, and H2.
E) These observations are insufficient to form any judgment about relative reactivity of any of the elements tested.
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