Using C# and LINQ, please show me an example of how to sort a collection of objects based on one of their properties, and returning only unique results.
I can show you an example of how to sort a collection of objects based on one of their properties, returning only the unique results.

Let us suppose that we have 'Human' class as follows:
```
public class Human
{
    public string Name { get; set; }
    public char Gender { get; set; }
    public int Age { get; set; }
}
```


Suppose that you have Collection as this:
```
List<Human> humans = new List<Human>()
{
    new Human() { Name = Alisha, Gender = 'F', Age = 22 },
    new Human() { Name = Manish, Gender = 'M', Age = 26 },
    new Human() { Name = Ashim, Gender = 'M', Age = 24 },
    new Human() { Name = Sanjana, Gender = 'F', Age = 20}
};
```


The following code sorts the collection based on the 'Age' property and returns only the unique objects from collection.
```
var sortedHumans = humans.OrderBy(h => h.Age).Distinct();
```


You can iterate over the sorted collection to print the properties as follows:
```
foreach (Human human in sortedHumans)
{
    Console.WriteLine(${human.Name} ({human.Gender}, {human.Age}));
}
```