Code an initial value in a radio group

[Tiago Rodrigues]

How can I code an initial value in a radio group?

<div class="row">
      <div class="col">
        <lf-radio #lfRadioBlock
                  name="optimizerSelection"
                  [options]="options"
                  [isRequired]="true"
                  (focus)="onFocus()"
        ></lf-radio>
      </div>
    </div>

I have this element and I need to select the value 'automatic' as default.

Thanks! Tiago Rodrigues