Which of the Following Statements Is True About the Benefits

Which of the following statements is true about the benefits of volunteering?

A) research has found a relationship between health and volunteering
B) the relationship between volunteering and quality of life has been shown to be causal
C) most research in the area has been longitudinal
D) greater benefits result from volunteers engaged in information referral than enablement roles
E) volunteers involved in less formal helping roles seem to derive greater rewards from volunteering