PART a Some Playoff Games Are Heartbreakers, Since All Playoff

Short Answer

PART A Some playoff games are heartbreakers, since all playoff games are either heartbreakers or occasions for glee.
Which of the following correctly expresses the form of this argument? PART B
Which of the following substitutions proves the argument invalid?
A) P = fish, H = animals, O = mammals.
B) P = dogs, H = cats, O = fish.
C) P = dogs, H = fish, O = animals.
D) P = male, G = dogs, H = animals, O = fish.
E) P = women, H = humans, O = doctors.