Braking action on a wett runway

[HYA]

I have come across a question on my ATP studies that I'm stuck on, wondering if anyone can give there opinion

During Landing, on a wett runway what is the most effective initail braking?

1.Rev/brakes
2.Rev/spoilers
3.Spoilers/brakes
4.brakes/Anti-skid

Obviously, reverse thrust is one but would you say spoilers or brakes?

Thanks in advance.
hya