Analyze the following code:

```
double[] c = {1, 2, 3};
System.out.println(java.util.Collections.max(c));
```
a. The code is correct and displays 3
b. The code is correct and displays 3.0
c. The code has a compile error on Collections.max(c). c cannot be an array.
d. The code has a compile error on Integer[] c = {1, 2, 3}.

c