Why Are Babies Born Between January Through March Believed to Have

Why are babies born between January through March believed to have an elevated risk for developing schizophrenia?

A) There is an increased risk for influenza and other viral diseases.
B) Rapidly changing temperatures can adversely affect the developing fetus.
C) The winter months are associated with an increase in the number of falls.
D) The stress of weather and an increase in depression following the holiday season makes pregnant women more susceptible to dietary changes that affect their baby.