when it is a lucky day for me

[joham]

I'd like to start my journey to England on June 15, ________ I consider it is a lucky day for me.
A. what B. which C. when D. that

The above test question is taken from our test paper. I doubt whether it is a good question. I would say 'I'd like to start my journey to England on June 15, _which_ I consider is a lucky day for me.

I'd like to know how native speakers would think of this question.

Thank you in advance.

 

[5jj]

There is no problem with it grammatically, and 'which' is the correct answer.


ps (later) I was wrong!. See the next post.

Thanks, ems. I have an appointment with the optician today.

 

[emsr2d2]

Are you sure 5jj? Did you notice the use of "it is" in the second half of the sentence, after "which"?