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单项选择题

A salesperson works 50 weeks each year and makes an average (arithmetic mean) of 100 sales per week. If each sale is worth an average (arithmetic mean) of $1,000, then what is the total value of sales made by the salesperson in a year ?()

A.$50,000
B.$100,000
C.$500,000
D.$1,000,000
E.$5,000,000

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