B is correct
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Answer:
There are 9 girls in the club.
Explanation:
100% = 18 members
50% = × 18
Girls = 9
The Song Dynasty was prosperous in many respects of the society. In agriculture, the productive technology was improved which promoted the output of food; in handicraft industry, the division of labor became more detailed which made the handicrafts technology reach an advanced level; additionally, the development of the commodity economy exceeded the previous level. Particularly, the earliest paper currency appeared at that period.