正确生成RandomAccessFile对象的语句的是
A.
File f=new File('readFile'); RandomAccessFile raF=new RandomAccessFile(f);
B.
RandomAccessFile raF=new RandomAccessFile(d://mydir//File3.txt,'rw');
C.
RandomAccessFile raF=new RandomAccessFile('readwriteFile','rw');
D.
RandomAccessFile raF=new RandomAccessFile('readwriteFile',rw);