What Difference in Helping Behaviour Has Been Identified Between Conservatives

What difference in helping behaviour has been identified between conservatives and liberals?

A) Conservatives are more likely to help others with hardships perceived to have controllable causes than are liberals.
B) Conservatives are much more likely to help others than liberals.
C) Conservatives are only slightly more likely to help others than liberals.
D) Liberals are more likely to help others with hardships perceived to have controllable causes than are conservatives.