This is where things get convoluted.
The problem is that we try to assign titles usually used to denote sexual activity to the more complex issues of sexuality, sexual identity and gender.
If one only considers sexual acts as the determining factor, I would say bisexual as I have no issue with performing or receiving oral sex on/from either sex, although I have zero interest in anal intercourse.
However, as I have zero interest in men romantically, I'd have to say straight as a true bisexual would be capable of having a romantic relationship and developing emotional attachments with persons of either gender.
So the best answer would be, from a technical standpoint, that I am a straight cocksucker, which isn't one of the choices. Sorry.