Which mode of Ethercap packets are filtered based on source and destination?

When text is written in ________ it can be perceived as shouting

Fill in the blank(s) with correct word

Consider a class that uses the following variables to implement an array-based stack:

``` String [] s = new String[100]; int top = 0; ``` a method that implements the String peek() operation can be written as A) return s[top]; B) if (top == 0) throw new RuntimeException("Underflow"); else return s[top]; C) if (top == 0) throw new RuntimeException("Underflow"); else return s[top-1]; D) return s[top-1];