Which of the Following Statements Is the Most Accurate in Regards

Which of the following statements is the most accurate in regards to mice pups who receive less maternal nurturing?

A) As adults their brains are heavily mutated.
B) As adults they are more likely to nurture their offspring.
C) As adults they have high levels of glucocorticoid receptor expression.
D) As adults they have increased promoter methylation.
E) As adults they have increased ability to adapt to stress.