单选题 What is the ratio of 3/7 to the product 3(7/3)?
A. 3:7
B. 1:3
C. 3:21
D. 1:7
E. 3:49

【正确答案】 E
【答案解析】can be restated as 7. If you multiply 7 times both numbers to get rid of the fraction in 3/7, you get 3 and 49.