It's a simple question: Who is developing Call of Duty: Black Ops Declassified on PlayStation Vita?

But it's a question to which nobody - not even Treyarch, apparently - knows the answer.

"I don't know," replied Treyarch's Director of Communications John Rafacz when VideoGamer asked him whether his studio or Neversoft, the latest addition to the Call of Duty 'family', were behind the Vita version of Black Ops.

"With regards to the Vita, all I can tell you is that it's quite literally declassified."

We think you might mean 'classified', John...

But if Neversoft isn't developing the Vita game, what is the studio up to?

"When I know, I'll tell you," Rafacz continued.

The first details on Call of Duty: Black Ops Declassified leaked last week. The handheld shooter features an "all-new campaign of Special Ops missions".

However, questions remain over which studio is developing it. Could it be Sledgehammer, who is also working on its "next Call of Duty"? Rafacz won't say.

Rafacz wouldn't confirm whether Black Ops II is coming to Wii U, either, despite a British magazine claiming earlier this month that the game was headed to Ninty's upcoming console.

"Right now we've announced that the game is coming for 360, PS3 and PC. Announcements regarding any other SKUs just haven't been made."

However, Rafacz believes that "any technology that can enhance the Call of Duty experience is worth considering".

"When you talk about any technology that can enhance the Call of Duty experience, that's a technology that is worth considering," he continued. "There's that core Call of Duty experience and that is what fans expects, so anything that helps advance that is worth considering."