How can I enable HTML in OptionsetField?

<%- if @topic_view.topic.tags.present? %>
<%= t 'js.tagging.tags' %>: <%- @topic_view.topic.tags.each do |t| %> <%= t %> <%- end %>
<% end %>

Silverstripe Version: 4.8

Question: How can I enable HTML in OptionsetField ?
See "‘1’ => “Answer 1” below

	public function AideDDForm() { 

		$myQuizz = new DataAideDD1();

		$numQ = sizeof($myQuizz->questions);

		$fields = new FieldList();

		for ($i=0; $i<$numQ; $i++)
		{
[...]
			$fields[$i] = new OptionsetField(
				$name = 'Option'.$i,
				$title = $myQuizz->questions[$i][0],
				$source = array(
					'1' => "Answer <strong>1</strong>",
					'2' => "Answer <strong>2</strong>",
					'3' => "Answer <strong>3</strong>",
					'4' => "Answer <strong>4</strong>",
				),
			);
		}

		$actions = new FieldList( 
			FormAction::create('submit')->setTitle('Vérifier')
		); 	

		$required = new RequiredFields(['Option0', 'Option1', 'Option2', 'Option3', 'Option4', 'Option5', 'Option6', 'Option7', 'Option8', 'Option9']);

	 	return new Form($this, 'AideDDForm', $fields, $actions, $required);
	}

Try replacing the string with this:

DBField::create_field(
    'HTMLFragment', 
    "Answer <strong>1</strong>"
)

e.g.:

'1' => DBField::create_field('HTMLFragment', "Answer <strong>1</strong>"),

Source: SS4: add HTML to a FormField label - SilverStrip.es

Thank you very much, this is exactly what I was looking for.