Which of the following statements is used when you want to add data to the end of an existing text file?

(A) ``` Dim sr As IO.StreamReader = IO.File.OpenText("Data.txt")
```
(B) ``` Dim sr As IO.StreamReader = IO.File.AddText("Data.txt")
```
(C) ``` Dim sw As IO.StreamWriter = IO.File.CreateText("Data.txt")
```
(D) ``` Dim sw As IO.StreamReader = IO.File.AppendText("ata.txt"
```

(D) ``` Dim sw As IO.StreamReader = IO.File.AppendText("ata.txt"
```