购物对话Can I help you?等 — 英语选择题

Lily在服装店买衣服，售货员问："Can I help you?" Lily想买一件红色的毛衣，但她想知道价格。她应该依次说的两句话是：A. "Yes, please. I'd like a red sweater." → "How much is it?" B. "Yes, I do." → "How many is it?" C. "No, thank you." → "How much is it?" D. "Yes, please. I like red." → "How old is it?"