Question: Which is _not_ a correct way to declare a string variable?

1. `char *string = "Hello World";`
2. `char string = "Hello World";`
3. `char string[20] = {'H', 'e', 'l', 'l', 'o', ' ', 'W', 'o', 'r', 'l', 'd'};`
4. `char string[] = "Hello World";`

Answer: The correct answer of the above question is Option B:`char string = "Hello World";`