In Line with the Social Learning Theory, Haviland and Lelwica

In line with the social learning theory, Haviland and Lelwica (1987) found that when mothers displayed an angry or sad face, their 10-week-old infants:

A) spent less time looking at them.
B) responded with smiles and happy faces.
C) preferred to be held by a stranger who displayed a happy face instead.
D) adopted the appropriate matching facial expression.