下面哪段程序能够正确的实现了GBK编码字节流到UTF-8编码字节流的转换：byte[] src,dst;

• A.dst=String.fromBytes(src，"GBK").getBytes("UTF-8")

• B.dst=new String(src，"GBK").getBytes("UTF-8")

• C.dst=new String("GBK"，src).getBytes()

• D.dst=String.encode(String.decode(src，"GBK"))，"UTF-8" )