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Please help me.

AWhen this poster was produced, China was in conflict with European countries.

BWhen this poster was produced, China had the worlds fifth-largest economy

CWhen this poster was produced, China had a little contact with foreigners.

DWhen this poster was produced, China was eager to learn more about Europe.

Please help me. A. When this poster was produced, China was in conflict with European countries. B. When this poster was produced, China had the worlds fifth-la class=