Someone/anyone/you when addressing people

Hello,
let's imagine being on a class trip. The class is going to visit a museum and the teacher warns them before they enter it:
I want you to behave properly. I want to be sure that I won't catch
a) you touching anything.
b) someone touching anything.
c) anyone touching anything.

Usually, we replace "somebody", like in "to catch sb doing sth" with a noun or pronoun, as in a).
c) sounds acceptable to me as well, like in "anyone here in this class", no matter who. But it may also refer to any person in the museum.
b) makes me wonder...?

Which one is the most appropriate one in the situation mentioned above?
Thanks in advance

I want to be sure that I won't catch
a) you touching anything.

c) anyone touching anything.

Both of those work.

Replace 'anything' with 'something' in sentence B, and then it could work.

Skrej said:

Replace 'anything' with 'something' in sentence B, and then it could work.

Click to expand...

That's interesting. Why?
But b) is kind of weird then, right?

I'm not keen on B even with "someone" and "something". After "I don't want to catch ...", I'd expect "you", "anyone" or "any of you".

Buddy42 said:

That's interesting. Why?
But b) is kind of weird then, right?

Click to expand...

With the noted correction, I don't see anything odd about it. I can't elaborate why 'something' works when 'anything' doesn't.