Code exhibit:

There is an ASP.NET application named PassGuideApp.
PassGuideApp is utilizing a out-of-proc mode session state.
How can you add one attribute to the Vehicle Class, displayed in the code exhibit, to make
sure you can save an instance to session state.
What would be the preferred attribute?

A.
Digitized

B.
ObjectData

C.
ContractData

D.
Unbound

E.
Serializable

F.
Bindable

G.
Parallel