如何在Angular 2 RC5中处理复选框组？

<div *ngFor="let option of options">
  <label>
    <input type="checkbox" [value]="option.value" [(ngModel)]="selectedOptions" name="selectedOptions">
    {{ option.label }}
  </label>
</div>

selectedOptions: string[] = [];

ngOnChanges(changes: SimpleChanges) {
  // 处理选中状态变化的逻辑操作
}