A:Cu(H2O)4SO4·H2O
B:Na2CO3·10H2O
C:CuSO4·5H2O
D:NaAl(OH)4
clothes
color
price
socks
white,blue
$ 4
pants
black
$ 11
sweater
red , white
$ 8
T-shirt
red , green , black
$ 7
hat
black, red
$ 6