How to bind nested object to rdlc report

Suppose I have below custom object:-

public class A
{
public string id{get;set;}
......
public List<B> ListOfInv{get;set;}
}

public class B
{
public string Name{get;set;}
public string Comment{get;set;}
}

In RDLC report, first I want to display A class information as a header and in that I want to display information for List of B class properties. Now in RDLC report I want to implement grouping and my parent group will be A.id and nested group is B.Name. How should I implement it.

Please let me know in you have any idea.

Thanks in advance.........