Question from the Angular test

const routes: Routes = [
 {
    path: 'items',
    loadChildren: () => import('./items/items.module').then(m => m.ItemsModule)
  }
];

const routes: Routes = [
 {
    path: 'items',
    loadChildren: () => import('./items/items.module')
  }
];

const routes: Routes = [
 {
    path: 'items',
    loadChildren: import('./items/items.module')
  }
];

const routes: Routes = [
 {
    path: 'items',
    loadChildren: import('./items/items.module').then(m => m.ItemsModule)
  }
];