<?xml version="1.0" encoding="UTF-8"?>
<quiz>
  <question number="1">This is a question?</question>
  <choice letter="a">answer 1</choice>
  <choice letter="b">answer 2</choice>
  <choice letter="c" correct="correct">answer 3</choice>
  <choice letter="d">answer 4</choice>
</quiz>
