<ul class="question-choices">
  {% for key, choice in question.metas.choices %}
    {% set choiceIndex = (65+key)|chr %}
    <li data-index="{{ choiceIndex }}" data-for="question-{{ question.id }}-input-{{ choiceIndex }}">
      <div class="choice-index">{{ choiceIndex }}.</div>
      <div class="choice-body">{{ choice|bbCode2Html|raw }}</div>
    </li>
  {% endfor %}
</ul>