1. The problem statement, all variables and given/known data In order to increase number of poles in system we need to include A) zero at origin B) zero at infinity C) pole at origin D) pole at infinity 2. Relevant equations 3. The attempt at a solution Aren't the options linked ? I mean zero at infinity means a pole at origin and ques is already giving pole at origin as an option (c) while pole at infinity is itself a zero at origin I guess.