Which of the following is true?

The following SAS program is submitted:

data test;

infile ‘file specification’;

input name $ amount@@;

run;

Which of the following is true?
A . Two @@ together are the same as one c.
B. Two @@ hold the data records until the bottom of the DATA step.
C. Two @@ hold the raw data record across iterations of the DATA step.
D. Two @@ are invalid syntax and will cause the program to fail to execute.

Answer: C