What happens when you run the statement a second time?

Examine this statement:
SELECT student_id, gpa
FROM student_grades
WHERE gpa > &&value;
You run the statement once, and when prompted you enter a value of 2.0. A report is produced.
What happens when you run the statement a second time?

A.
An error is returned.

B.
You are asked whether you want a new value or if you want to run the report based on the
previous value.

C.
You are prompted to enter a new value.

D.
A report is produced that matches the first report produced.

Explanation:

:
use the double-ampersand if you want to reuse the variable value without prompting the user each
time.
Refer : Introduction to Oracle9i : SQL, Oracle University Study Guide, 7-13