What elements are in the array newArray after the following code is executed?

```
Dim firstArray() As Integer = {1, 2, 3}
Dim secondArray() As Integer = {3, 4, 5, 6}
Dim newArray() As Integer = firstArray.Except(secondArray).ToArray
```
(A) 1, 2, 3, 3, 4, 5, 6
(B) 1, 2, 3, 4, 5, 6
(C) 3
(D) 1, 2

(D) 1, 2