Linked lists are best suited _______

A. for relatively permanent collections of data. B. for the size of the structure and the data in the structure are constantly changing. C. data structure D. for none of above situation

In a circular linked list .

(A) components are all linked together in some sequential manner.  (B) there is no beginning and no end.  (C) components are arranged hierarchically.  (D) forward and backward traversal within the list is permitted. 

ADT is called as Abstract because

 A.None of these B.It is completely independent data type C.It is collection of different data types D. Implementation Details are hidden