Which of the Following Comments About an Object's Run Mode

Which of the following comments about an object's run mode is true?

A) A run mode of foreground will enable the business object to run at the same time as other foreground business objects.
B) A run mode of background will enable the business object to run at the same time as other background, foreground and exclusive business objects.
C) A run move of exclusive cannot run at the same time as any other business object.
D) The run mode of a business object has no influence on how many business objects can be run at the same time.