Research in Australia by Dono Et Al

Research in Australia by Dono et al. (2010) examined social identity and environmental activism. Which of the following statements is FALSE?

A) People who saw themselves as environmental activists were strongly motivated to buy products made from recycled materials.
B) People who saw themselves as environmental activists tended to read publications written by environmental groups.
C) People who saw themselves as environmental activists were willing to protest.
D) All of the above are true.