Question: Which statement declares a variable mileage whose value never changes and is inferred to be an integer?

1. `val mileage:Int = 566`
2. `var mileage:Int = 566`
3. `val mileage = 566` (Note: inferred)
4. `const int mileage = 566`

Answer: The correct answer of the above question is Option C:`val mileage = 566` (Note: inferred)