The Hypothesis of Miller Et Al

The hypothesis of Miller et al.'s first experiment, which attempted to modify children's littering behavior, was that:

A) both attribution and persuasion manipulations would lead to initial behavioral change and to stable, persistent behavior modification.
B) attribution manipulation would lead to behavioral change; persuasion manipulation would not.
C) both attribution and persuasion manipulations would lead to initial behavioral change, but only attribution would have a more long-lasting effect on behavior modification.
D) only those children who were lectured on the ecological problems of littering and pollution would exhibit any significant change in their littering behavior.