![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
Removal of the apical ectodermal ridge of a limb bud leads to
A.
continued development of the proximal structures, but no formation of new distal structures
B.
degeneration of the limb bud
C.
regeneration of a new apical ridge from adjacent epidermal tissue
D.
regeneration of the entire limb bud from underlying mesoderm