关于无症状性心衰，下列哪项正确（）

A.左室已有功能下降，LVEF<50%，有神经内分泌激活

B.左室已有功能下降，LVEF>50%，有神经内分泌激活

C.左室已有功能下降，LVEF<50%，无神经内分泌激活

D.左室已有功能下降，LVEF>50%，无神经内分泌激活

E.此为一短暂的代偿过程

-What did you discuss just now?    

-We discussed           .  [    ]

A．when could we meet at Xinhua Bookstore     

B．where we would have a wonderful outing  

C．whether shall we have a barbecue during May Day  

D．who is suitable to be the host of the charity show