need help with these question , Please explain each question in a paragraph

(1A). Does whether a linked list is doubly- or singly-linked affect the big- performance of a stack implemented using

that linked list? Why or why not?

(1B) . Given the location of the parent, what big- time does adding a child take for a dynamic-child-pointer-array

tree? Is it different if we want to insert a child into the middle of the existing children? Why?