JAVA HELP PLEASE

StackOfStrings s = new StackOfStrings(); while (!StdIn.isEmpty()) { String item = StdIn.readString(); if (!item.equals("-")) s.push(item); else if (s.isEmpty()) StdOut.println("BAD INPUT"); else StdOut.print(s.pop() + " "); } 

Suppose the input is " one two three - four five - six - - seven " What would be the second word in the output?

Question 4 options:

	two
	three
	four
	six
	none of these