Final answer:
When multiple containers are started from the same image, each container shares the underlying image, and only changes made by each container are stored separately. Thus, while the total size may increase with each container due to these changes, it is not as simple as summing the size of each individual container as if they were separate images.
Step-by-step explanation:
If multiple containers are started from the same exact image, the total size on disk for these containers would not simply be the sum of individual container sizes. Instead, because of the way that containerization technology works, particularly with platforms like Docker, the disk usage is more efficient. Each container shares the same underlying image, and only the changes that each container makes—such as writing new files or modifying existing ones—are stored separately. Therefore, the correct answer is B) Sum of individual container sizes, but with a note that the sum does not entail duplicating the entire base image for each container.