To answer this question, you need to understand the characteristics of JCL (Job Control Language) in mainframe computing.
JCL is a scripting language used to define and control jobs on IBM mainframe operating systems. It consists of statements that specify the various job steps, input/output files, and system resources required for job execution.
In JCL, the maximum length of a single line is 71 bytes. This includes the statement itself and any continuation characters used to extend the line beyond the initial 71 bytes.
Option A) 60 bytes - This option is incorrect because the maximum line length in JCL is 71 bytes.
Option B) 55 bytes - This option is incorrect because the maximum line length in JCL is 71 bytes.
Option C) 80 bytes - This option is incorrect because the maximum line length in JCL is 71 bytes.
Option D) 71 bytes - This option is correct because it correctly identifies the maximum line length in JCL.
The correct answer is D) 71 bytes.