Identify (A) to (E ) and also explain the reaction involved

Explanation

A: Cu, B: `Cu(NO_(3))_(2) " " C: [Cu(NH_(3))_(4)]^(2+)`
D: `CO_(2), " " E: CaCO_(3)`
`CuCO_(3) rarr CuO + underset((D))(CO_(2))`
`CuO + CuS rarr underset((A))(Cu) + SO_(2)`
`Cu + 4HNO_(3) rarr underset((B)) (Cu(NO_(3))_(2)) + 2NO + 2H_(2)O`
`Cu^(2+) + 4NH_(3) rarr underset(underset(("Blue solution"))((C)))([Cu(NH_(3))_(4)]^(2+))`
`underset((D))(CO_(2)) + Ca (OH)_(2) rarr underset(("Milky"))(CaCO_(3)) + H_(2)O`
`CaCO_(3) + CO_(2) + H_(2)O rarr underset(("Clear solution"))(Ca(HCO_(3))_(2))`