Besides phone numbers, what are the other categorical variables in your survey? (The survey asks for family size, the kind of pets they have, the grade of the youngest child in the family, the family's annual income in dollars, what the dad does for a living, whether the mom works, and their phone number.) A.
Everything but annual income

B.
Grade of youngest child, dad's occupation, whether mom works, and kind of pets

C.
Family size, dad's occupation, whether mom works, and kind of pets

D.
Everything but family size

E.
Dad's occupation, whether mom works, and kind of pets