Which of the following statement is true? i) Using singly-linked lists and circular list, it is not efficient to traverse the list backwards. ii) To find the predecessor, it is required to traverse the list from the first node in case of singly linked list Select one: O A. i-only OB.ii-only O C. Both i and ii OD. None of both Which is/are the application(s) of stack Select one or more: O A. Function calls B. check mathematical expression balance C. Evaluation of arithmetic expressions O D. computing the big-Oh complexity of any