Which Statement About Cloned Animals Is True

Multiple Choice

Which statement about cloned animals is true?

A) Cloning of extinct animals has been used to resurrect the wooly mammoth.
B) Cloning has been used to preserve endangered species.
C) Cloning of the sheep "Dolly" demonstrated the efficiency of this method of reproduction,in that all embryos transferred to a surrogate mother survived to birth.
D) Cloning by transferring a nucleus from an embryo into an enucleated egg is less effective than transferring a nucleus from a mammary gland.
E) The cloned sheep named "Dolly" was a clone of the Scottish blackface sheep that gave birth to Dolly.