What is the difference between anactive object and a passive object?

• A. an active object controls a passiveobject.
• B. an active object does not have athread of control; a passive objecthas a thread of control.
• C. an active object executes in a distributedsystem; a passive objectexecutes in a centralized system.
• D. an active object has a thread ofcontrol; a passive object does nothave a thread of control