   render: ->
     html = @props.model.stem_html
     qid = @props.model.id or "auto-#{idCounter++}"
+    hasCorrectAnswer = !! @props.correct_answer_id
 
     if @props.feedback_html
       feedback = <ArbitraryHtml className="question-feedback has-html" html={@props.feedback_html} />

      classes.push('answer-correct fa') if isCorrect
      classes = classes.join(' ')

      <div className={classes}>
        <input
          type="radio"
          className="answer-input-box"
          checked={isChecked}

          name="#{qid}-options"
          onChange={@onChangeAnswer(answer)}
        />

      <div className={classes}>
        {radioBox}
        <label htmlFor="#{qid}-option-#{i}" className="answer-label">
          <div className="answer-letter" />
          <ArbitraryHtml className="answer-content" html={answer.content_html} />
        </label>
      </div>

    classes = ['question']
    classes.push('has-correct-answer') if hasCorrectAnswer
    classes = classes.join(' ')
