Cause- The the church is on fire, Johnny thinks it's his fault.
Effect-Johnny and Ponyboy rescue the kids in the church and Johnny, Dally, and Ponyboy all get sent to the hospital.
Effect-Randy drops out of the rumble and Randy and Ponyboy drop the social types. Cause-Johnny is jumped and Bob dies.
Answer:
A
Explain:
They grow suspicious of each other, afraid that one will cheat the other out of a win. They decide to treat each other as purely competitors for the time being.