What is the main conclusion of Albert Bandura's Bobo Doll Experiment?

The experiment shows that people learn more by observing someone being rewarded or punished, rather than just being rewarded or punished themselves.
The experiment demonstrates that children are more influenced by same-sex models.
The experiment proved that children exposed to aggressive male models were more likely to act aggressively verbally than those who were not exposed to aggressive models.
a) Only statement 1 is correct.
b) Statements 1 and 2 are correct.
c) Statements 1 and 3 are correct.
d) All statements are correct.