Which of the following are examples of relations that are antisymmetric? Select all or any that apply.

Grasshopper eats com, mouse eats corfc mouse eats grasshopper, snake eats mouse, hawk eats mous: hawk eats snake.

I married a widow with a gown daughter, my facher, a widlower, then married my step$-$daughter. Thus I am my own step$-$gampa. $($The relation in this example is $"$is biological ancestor of or step$-$anoester of$")$

Aureia is better than Goverdohm at pitching: Gwendohn is betser than Aureia at batting

Rock beats scksors: scissors beats paper; paper beats rock.

CSCI $235$ is a prerep for CSCl $245,$ CSCl $245$ is a rexp for CSCl $345$; CSCl $243$ is a preveq for CSCI $345$: MATH $231$ is a prereq for MATH $245$; CSCI $345$ is a prem for CSCI $381$; MATH $245$ is a preveq for CSCI $$81$ than The Cours of Mosle Chrials.