Which of the following statements is correct about the C#.NET code snippet given below?

int a = 10; 
int b = 20; 
int c = 30;
enum color: byte
{
    red = a, 
    green = b,
    blue = c 
}

Which of the following statements are correct about an enum used inC#.NET?

1. By default the first enumerator has the value equal to the number of elements present in the list.
2. The value of each successive enumerator is decreased by 1.
3. An enumerator contains white space in its name.
4. A variable cannot be assigned to an enum element.
5. Values of enum elements cannot be populated from a database.