*
	 * @param array $data Array of choice data.
	 * @return string|boolean
	 */
	public function update_choice( $data ) {

		// If there's no ID, we'll add a new choice.
		if ( ! isset( $data['id'] ) ) {
			return $this->create_choice( $data );
		}

		// Get the question.
		$choice = $this->get_choice( $data['id'] );
		if ( ! $choice ) {
			return false;
		}

		$choice->update( $data )->save();