一件商品先降价20%,又涨价20%,商品价格请选择ABCD'}.Z5B'{-t:H(c1`,I3I8y7Q;K+h+\+O4^4E
A.不变:H(c1`,I3I8y7Q;K+h+\+O4^4E
B.比原价高:H(c1`,I3I8y7Q;K+h+\+O4^4E
C.比原价低:H(c1`,I3I8y7Q;K+h+\+O4^4E
D.不能确定:H(c1`,I3I8y7Q;K+h+\+O4^4E