To answer this question, you need to have knowledge about CA7 and its entry modes. Let's go through each option to understand why it is correct or incorrect:
Option A) SSCN - This option is a valid entry mode in CA7. SSCN stands for "Start Schedule Command Normal." It is used to manually start a job or a set of jobs.
Option B) AUTO - This option is a valid entry mode in CA7. AUTO stands for "Automatic Job Submission." It is used to automatically submit jobs to CA7 for execution.
Option C) DEMD - This option is a valid entry mode in CA7. DEMD stands for "Demand Entry." It is used to manually submit a job or a set of jobs for immediate execution.
Option D) SCHD - This option is the correct answer. SCHD is not a valid entry mode in CA7. It is not a recognized entry mode and is not used in CA7.
Option E) None of these - This option is incorrect as there is at least one invalid entry mode, which is option D.
The correct answer is D. SCHD. This option is not a valid entry mode in CA7.