如何根据angular中的单选按钮选择来递增变量

<input type="radio" name="options" [(ngModel)]="selectedOption" value="1"> Option 1
<input type="radio" name="options" [(ngModel)]="selectedOption" value="2"> Option 2
<input type="radio" name="options" [(ngModel)]="selectedOption" value="3"> Option 3

selectedOption: string = '1';
counter: number = 0;

<input type="radio" name="options" [(ngModel)]="selectedOption" value="1" (ngModelChange)="incrementCounter()"> Option 1
<input type="radio" name="options" [(ngModel)]="selectedOption" value="2" (ngModelChange)="incrementCounter()"> Option 2
<input type="radio" name="options" [(ngModel)]="selectedOption" value="3" (ngModelChange)="incrementCounter()"> Option 3

incrementCounter() {
  this.counter++;
}