刚刚捡到的东西是哪个用什么时态？

I have found a mobile phone . Do you know ?

A.who the phone belonged to

B.who is the owner of the phone

C.who the phone belongs to

请问老师什么是正确的呢？

答案给了B，我感觉AC也说得通啊。

谢谢老师指点。

I have found a mobile phone . Do you know ?

A.who the phone belonged to

B.who is the owner of the phone

C.who the phone belongs to

请问老师什么是正确的呢？

答案给了B，我感觉AC也说得通啊。

谢谢老师指点

回答如下：

手表是哪个的是一个客观事实，因此需要用一般目前时态，不可以用其他时态，所以答案为B

I have found a mobile phone . Do you know ?

I have found a mobile phone. Do you know who is the owner of the phone .

我发现了一部移动电话，你了解这部手机的主人是哪个呢？