Margaret Crenshaw, While Discussing If the Quest for Significance Resulting

Margaret Crenshaw, while discussing if the quest for significance resulting in a suicide bombing is sufficient, suggests that

A) we almost know everything there is to know.
B) for the time being, we can't learn anymore because we aren't willing to go far enough in our methods.
C) we need to know where these ideas that glorify suicide attacks come from.
D) suicide bombing isn't performed for the glory of it; people only do it for revenge.