If a Gene from the Coelacanth That Drives the Development

If a gene from the coelacanth that drives the development of limbs in the coelacanth embryo was inserted into rats,what would the result likely be?

A) It would likely drive the production of a lobed fin in the rat.
B) It would likely drive production of a limb that is a cross between a normal rat limb and a lobed fin.
C) It would likely drive the production of an almost normal rat limb.
D) It would likely drive the production of no limb in the rat embryo.