In a Typical "Estate Freeze" Involving Stock

In a typical "estate freeze" involving stock:

A) The common stock is subject to the gift tax but not to the estate tax.
B) The preferred stock is subject to the gift tax but not to the estate tax.
C) The owner makes a gift of both common and preferred stock.
D) The common stock is subject to both the gift tax and the estate tax.
E) None of the above.