What Does Recent Research Suggest Regarding the Role of Heredity

What does recent research suggest regarding the role of heredity on personality?

A) Although heredity was thought to play a key role in the formation of personality, recent studies show that heredity has very little to do with how a person's personality is formed.
B) There is evidence to support the fact that heredity plays a strong role in the formation of one's personality as well as the career one chooses.
C) Evidence shows that inherited traits contribute to a person's way of thinking, but have little effect on how his or her personality is formed.
D) Long-term studies conclude that one's environment and experiences ultimately shape that person's personality.