return [
{tag: 'div', klass: 'exercise.choice', prototype: choiceMulti},
{tag: 'div', klass: 'exercise.choice.single', prototype: choiceSingle},
return [
{tag: 'div', klass: 'exercise.choice', prototype: choiceMulti},
{tag: 'div', klass: 'exercise.choice.single', prototype: choiceSingle},