The working principle of a PLC is based on cyclic scanning method known as the scan cycle. Identify the correct sequence of steps.a. Execute the user or application programb. Read data from input modulec. Start cycling time monitoringd. Write data into output module

• A. a - b - c - d
• B. c - a - b - d
• C. a - d - b - c
• D. c - b - a - d