Under the Model Rule on Fairness to Opposing Party and Counsel

Under the Model Rule on fairness to opposing party and counsel, a lawyer may NOT do which of the following?

A) Produce voluminous documents to an opposing party without supplying an index.
B) Unlawfully alter, destroy, or conceal a document or thing with potential evidentiary value.
C) Improperly obstruct another party's access to evidence.
D) Two of the above.