Which of the Following Was a Discovery by Richard Davidson

Which of the following was a discovery by Richard Davidson and his colleagues?

A) Orbital frontal damage can introduce abnormal sexual behavior,while dorsolateral lesions may reduce sexual interest.
B) The left frontal lobe is involved in controlling language related movement,whereas the right frontal lobe plays a role in non-verbal abilities.
C) The left frontal lobe governs more positive feelings,while the right frontal lobe controls more negative moods.
D) The frontal lobes are extremely vulnerable to injury due to their location at the front of the cranium,proximity to the sphenoid wing and their large size.