Identify Cases, Variables and Any Units

Multiple Choice

Identify cases, variables and any units.
-The Pew Internet & Life Project study about online shopping asked respondents to
Indicate their education level on the following scale: Less than High School, High
School, Some College, College +. Which of the following statements is (are) true?

A) Education level is a categorical variable.
B) Education level is nominal scaled.
C) Education level is ordinal scaled.
D) Both A and B
E) Both A and C