题目内容：
Inthe sentence “At last, that is changing” in Paragraph 3, what does “that” referto?
A．Plus-size clothes segment is high-risk. A．Plus-size clothes segment is high-risk.
B． Thecost of making plus-size clothes decreases.
B． The cost of making plus-size clothes decreases.
C． Thedesigners and retailers begin to pay attention to plus-size women.
C． The designers and retailers begin to pay attention to plus-size women.
D．Plus-size women were not served well by designers and retailers.
D．Plus-size women were not served well by designers and retailers.
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答案解析：