Which of the Following Is True of the Seasonality Effect

Which of the following is true of the seasonality effect?

A) Schizophrenia is more likely to occur in a person born in June, July, and August.
B) The seasonality effect is lower in rural settings than in urban settings.
C) The seasonality effect is mostly due to indoor smoking by the mother during the winter.
D) The seasonality effect is enhanced when fall temperatures are higher than normal.
E) The effect does not occur in regions that free access to antibiotics.