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83、Examine the following query:

SQL> SELECT prod_id, amount_sold

FROM sales

ORDER BY amount_sold

FETCH FIRST 5 PERCENT ROWS ONLY;

What is the output of this query?

A. It displays 5 percent of the products with the highest amount sold.

B. It displays the first 5 percent of the rows from the SALEStable.

C. It displays 5 percent of the products with the lowest amount sold.

D. It results in an error because the ORDER BYclause should be the last clause

Correct Answer: C

Section: (none) Explanation：因?yàn)槭巧�序，所以顯示的就是銷售量最少的前面百分5的數(shù)據(jù)