Which statement is true for cephalochordates?
ANotochord is present only in the larval stage; it is absent in adults.
BNotochord is present in the larval stage; it transforms to vertebrae in adults.
CNotochord is present throughout their lives.
ANotochord is present only in the larval stage; it is absent in adults.
BNotochord is present in the larval stage; it transforms to vertebrae in adults.
CNotochord is present throughout their lives.