Consider the following code:   String?s=null;   Which?code?fragments?cause?an?object?of?type?NullPointerException?to?be?thrown?

• A.if((s!=null)&(s.length()>0))

• B.if((s!=null)&&(s.length()>0))

• C.if((s==null)|(s.length()==0))

• D.if((s==null)||(s.length()==0))