[单选题]
Which of the following s cl 9dtrnqo)(3alts would form coloured solutions wn;s +nj0(d2fi+m gskehen dissolved in wat+ s(d 2ensgi fmnk0;+jer?
I. $CuCl_2$
II. $ScCl_2$
III. $ZnCl_2$
A. $I$ only
B. $I$ and $II$ only
C. $I$ and $III$ only
D. $I$, $II$, and $III$