The concatenation of two list can performed in O(1) time. Which of the following variation of linked list can be used.April 3, 2019April 3, 2019 Marwa KhanIn Data Structure McqsLeave a Comment on The concatenation of two list can performed in O(1) time. Which of the following variation of linked list can be used. A. Singly linked list B. Doubly linked list C. Circular doubly linked list D. None of these