5. This question is about linked lists. Please describe your answer in detail. a. If we want to reverse the order of a linked list, what are the steps to complete this operation? For example, if we have a linked list 10->4->13->7->NULL, then we would like to have a linked list 7>13>4>10> NULL. b. If we want to merge two ordered linked lists, what are the steps to complete this operation? For example, if we have two ordered linked lists 1>3>5 and 2>4>6, then we would like to have a linked list 1>2>3>4>5>6