The Social Learning Explanation for Helping Behaviour Is Supported by the Finding

The social learning explanation for helping behaviour is supported by the finding that ______.

A) we are more likely to help if the other person previously made a big, unexpected sacrifice for us
B) perceivers who had seen someone else helping were subsequently more likely to help
C) people were more likely to give money to a family in Sudan when they needed money in the short term rather than the long term
D) people are more likely to donate money to a breast cancer charity than a lung cancer charity