if and or statement

[Pizzio]

I'm looking for a formula setup for the following

IF cell a1 = b1 and cell c1 = ATC or ABC then X

Any ideas, i've tried to run this a few ways and nothings worked so far.

 

[Gerald Higgins]

Lots of ways, here's one

=if(a1=b1,if(c1="ATC","X",if(c1="ABC","X","Not X")),"Not X")