I've a list of SelectedEmployees from list of Employees class in `IEnumerable<Employee> SelectedEmployees` collection. Again I've nested generic collection as below code. How can i set `IsPhoneAssigned` value to `true` for only selected employees using LinQ with C#

```
 public class Employee
    {
       IList<PhoneProperty> Phones {get; set;}
    }

public class PhoneProperty
    {
        public bool IsPhoneAssigned { get; set; }
    }

```