FDG代谢可能较低的是（）。

A.高分化肝细胞肝癌

B.中、低分化肝细胞肝癌

C.肝脏腺癌

D.肝脏转移癌

E.肝脏淋巴瘤

--- Kitty, do you know ______?

---Sure, about forty minutes.

A．when did their class meeting begin.

B．where their class meeting was held

C．how often their class meeting is held

D．how long their class meeting will last