Your Neighbor's 10-Year-Old Son Has Come to Your House to Collect

Your neighbor's 10-year-old son has come to your house to collect money for a relief fund for hurricane victims.You were initially unwilling to contribute but agreed to donate when you discovered that he had already collected money from all your neighbors.This is an example of ________.

A) pure altruism
B) impure altruism
C) liberalism
D) rationalism