Does all margarine have trans fatty acids?

Margarine has trans fatty acids in it

All three are important. Fatty acids consist of the elements carbon (C), hydrogen (H) and oxygen (O) arranged as a carbon chain skeleton.

Trans-fatty acids are composed of a tri-alcohol base like glycogen and 3 CH chains.

I don't know what it means.

fatty acids that your body can't break down due to their alternating carbon backbones.