Studies Involving Pregnant Women Have Shown That "Socialization Begins Before

Studies involving pregnant women have shown that "socialization begins before birth." Which of the following examples illustrates this finding?

A) Reading to the unborn child is correlated with earlier language acquisition.
B) Mothers' prenatal talk to the female or male fetus reflects gender stereotypes.
C) Playing classical music to the unborn child slows its heartbeat.
D) Mother's alcohol consumption during pregnancy is related to mental retardation in the newborn.