Do the following.

$($a$)$ Name two attribute variables about its customers that a newly opened department store might find informative to study.

zip code, gender

highest level of education, distance to store

age, distance to store

zip code, age

$($b$)$ Name two numerical variables about its customers that a newly opened department store might find informative to study.

annual income, highest level of education

age, distance to store

age, gender

annual income, gender