单项选择题
A. $1,000,000 B. $1,500,000 C. $3,000,000 D. $4,500,000 E. $6,500,000
A. 7% B. 10% C. 20% D. 23% E. 31%
A. 200 B. 300 C. 400 D. 500 E. 600