QUESTION 76
The following SAS program is submitted:
data work.test;
Author = 'Agatha Christie';
First = substr(scan(author,1,' ,'),1,1);
run;
Which one of the following is the length of the variable FIRST in the output data
set?
A. 1
B. 6
C. 15
D. 200
Answer: D

要抓狂了，这个200是哪里冒出来的？？？
谢谢大家了！