Single infopath form on submit need to store in multiple list

Hi ,

I have have 5 lists combined together want to create a single infopath form. 

Suppose List A, B,C,D,E --- 

List A will have few columns and a dropdown column for B, C,D,E.  Suppose if the user select B from the dropdown it have to load a infopath form for B and on submit should store the data in respective List B.

How to create a infopath form combing all the forms into single LIST A form and how to store to respective lists.. 

Could please explain me how to create a Infopath form (Single)

In List A Infopath form i need to include B,C,D,E columns and create a single Infopath form .

Create a single form all together...

Thanks in advance

Apoorva