Helen: Zhè jiàn yīfu hǎo piàoliang!
Helen：这 件 衣服 好 漂亮！
Lǐ Lì: Shì a, yě hǎo guì.
李 丽：是 啊，也 好 贵。
What can we know from this dialogue?
A. This dress is of good quality.
B. This dress is very expensive.
C. This dress is nice but not expensive.