Which statement is true about the default constructor of a top-level class?

A default constructor, by definition, is a no-argument constructor generated by the compiler if no other constructors are explicitly defined in the class.

The default constructor's access modifier is the same as the class itself; it is typically public for a public class or package-private for a non-public top-level class, not private.

While a class can have overloaded constructors, the compiler-generated default constructor itself is always no-argument and cannot be overloaded; if you define any constructor, the default constructor is not generated.

Every Java constructor, including a compiler-generated default constructor, must explicitly or implicitly invoke a superclass constructor as its first statement; if no `super()` or `this()` call is present, the compiler automatically inserts `super()`.