Which, If Any, of the Following Statements Properly Characterize Features

Which, if any, of the following statements properly characterize features involving buy-sell agreements?

A) If properly structured, the agreements can control valuation for estate tax purposes.
B) If a stock redemption is proposed, utilize a cross-purchase type.
C) Agreements cannot be used to control disposition of partnership interests.
D) Arrangements work best when the interest to be transferred involves publicly traded securities.
E) None of the above.