A Method Int Size( )In a Linked List Class Returns

question 18

Multiple Choice

A method int size( ) in a linked list class returns the number of elements stored in the list by executing the single statement return count;For this to work correctly,

• A) count must be a static variable in the class,initialized to 0,incremented by each add method,and decremented by each remove method
• B) count must be an instance variable in the class,initialized to 0,incremented by each add method,and decremented by each remove method
• C) count must be a local variable in each add and remove method: the add methods must increment count,and the remove methods must decrement count.
• D) It is not possible for size to just return the count value: the size method must set count to 0 and then increment count once for each element in the list.