In programming, what potential issue arises when you store an externally mutable object into a variable that may expose internal representation? A) It may lead to encapsulation being violated, as the internal state of the object can be modified externally, potentially leading to unpredictable behavior. B) It improves the efficiency of the program by reducing memory usage. C) It ensures that the internal state of the object remains private and cannot be modified. D) It automatically synchronizes the object's state with external systems to maintain consistency.