关于右房室瓣下移畸形，叙述错误的是（）。

A.四心腔显示房化右心室与右心房合并显示为一巨大的右房腔

B.右房室瓣下移是指隔瓣下移，前瓣和后瓣不下移

C.右房室瓣隔瓣附着部位低于左房室瓣前瓣附着部位1.5cm

D.多普勒超声右房室瓣上均有反流

E.房化右心室越大，手术效果及预后越差

Best-selling author and race car driver Han Han offered a 20 million RMB reward to _____ could prove his works were ghostwritten (代笔).

A．no matter who

B．whoever

C．who

D．whomever