The correct answer is C. real time system.
A real-time system is a computer system that controls a physical process and must respond to changes in that process in a timely manner. The system must be able to update its files as soon as any change takes place in order to maintain accurate information about the process.
A quick processing system is a system that can process data quickly. However, it does not need to update its files as soon as any change takes place.
A batch processing system is a system that processes data in batches. This means that it collects data over a period of time and then processes it all at once. Batch processing systems are not as fast as quick processing systems, but they are more efficient because they can process large amounts of data at once.
A remote processing system is a system that is located at a distance from the user. The user can access the system through a network connection. Remote processing systems are often used for tasks that require a lot of computing power, such as scientific computing or video editing.
E is not the correct answer because it is not a type of computer system.