John has just phoned to say that he has still not received your letter. Well in that case I ______ a copy straight away. What's his fax number? What is the most

John has just phoned to say that he has still not received your letter.
Well in that case I ______ a copy straight away. What's his fax number?

What is the most correct answer to fill the blank?

A
am going to fax

B
will fax

C
would fax

D
am faxing



E
fax