Which Statement Best Describes the Safety of Nuclear Plants

Which statement best describes the safety of nuclear plants? 

A)  Nuclear waste from plants are stored safely underground using a method called deep disposal. 
B)  Nuclear plants cannot withstand attacks by terrorists because they have insufficient security. 
C)  All nuclear waste from plants can easily be converted into less-harmful isotopes. 
D)  All nuclear plants can withstand a direct hit from a large jet traveling at high speed.