MVC :: Parent - Child Relationship And Model Binding

how controls (txtbox, radio, etc) are mapped to properties in my Model. Now to the next part : My scenario (example):

Model: three tables: tblPerson, tblPersonOptions, tblOptionsConfig
UI:
Person Name: ______ (required)
Person Age: ________ (required)

radio button: Does Person want to select options? Yes / No ? (required) If yes, then show a checkbox list of options from tblOptionsConfig: (required if yes above). Scenario I tested:

Person Name: Tester User Person Age: Left blank (check if validation error is thrown)
Radion button: Yes. in options check ..let's say 3 out of 5 options. The UpdateModel throws the validation error and the page is returned back to the view(add.aspx).....................