(A) In an aqueous solution free Copper (I) disproportionates to give Copper (O) and Copper (II).
(B) Copper (II) reduces I$_2$ to I$^{-}$
(C) Strong heating of CuSO$_4$ gives CuO and SO$_3$
(a) (1) Only
(b) (2) Only
(c) (3) Only
(d) None of the above
