Please get the information about zebras as ______ as possible.

A．much

B．many

C．more

D．Most

下列哪种早搏多属于功能性的：（）

A.频发性早搏

B.多源性早搏

C.运动后早搏增多

D.多联律性早搏

E.情绪激动后出现早搏