C) 28
Step-by-step explanation:
Set it up like a chart of 8 teams (A - H)
Where you list off what team they still have to face
A: B, C, D, E, F, G, H
B: C, D, E, F, G, H
C: D, E, F, G, H
D: E, F, G, H
E: F, G, H
F: G, H
G: H
H: has no one left to fight
Count the total and you’ll get 28