Which wildcard character matches a single character in the same position as the wildcard?

In a savings account, the interest earned is calculated each month by applying an interest ________ to last month's balance

Fill in the blank(s) with correct word

The code for implementing the String pop() operation is

A stack based on a linked list is based on the following code ``` class Node { String element; Node next; Node(String el, Node n) { element = el; next = n; } } Node top = null; ``` A) if (top != null) { top = top.next; String el = top.element; return el; } else throw new RuntimeException("Empty Stack"); B) if (top != null) { String el = top.element; top = top.next; return el; } else throw new RuntimeException("Empty Stack"); C) if (top != null) { String el = top.element; top = null; return el; } else throw new RuntimeException("Empty Stack"); D) return top.element; top = top.next;