1.  What was the percentage increase in imports from 1997 to 1998 ?

A. 72
B. 56
C. 28
D. None of these
E. Data inadequate

Answer: Option E

Explanation:

The graph gives only the ratio of imports to exports for different years. To find the percentage increase in imports from 1997 to 1998, we require more details such as the value of imports or exports during these years.

Hence, the data is inadequate to answer this question.