An Ontario Hospital Concerned About the Rising Number of Low

An Ontario hospital concerned about the rising number of low birth weight babies collected data from 300 births over a five year time span.They recorded the mother's age,the mother's prepregnancy weight,the level of prenatal care (none,minimal,adequate) ,and whether the mother used drugs during pregnancy (cigarettes,alcohol,etc.) .

A) Mother's age,quantitative,years; mother's prepregnancy weight,quantitative,kilograms; level of prenatal care,categorical; mother's drug use,quantitative,weeks.
B) Mother's age,quantitative,years; mother's prepregnancy weight,quantitative,kilograms.
C) Mother's age,quantitative,years; mother's prepregnancy weight,categorical; level of prenatal care,categorical; mother's drug use,categorical.
D) Mother's age,quantitative,years; mother's prepregnancy weight,quantitative,kilograms; level of prenatal care,categorical; mother's drug use,categorical.
E) Mother's age,quantitative,years; mother's prepregnancy weight,quantitative,kilograms; level of prenatal care,categorical.