When Configuring an Object's Run Mode Which of the Following

When configuring an object's run mode which of the following is true?

A) Setting the run mode to foreground will give the object priority over the target system ahead of any other Business Object.
B) Setting the run mode to exclusive will ensure only one process runs on that resource at a time.
C) Setting the run mode to background will enable the object to run at the same time as foreground and background objects on the same resource.
D) Leaving the run mode blank will allow any number of processes and objects to run at the same time on the same resource.