Consider the Following to Answer the Question(s)

Multiple Choice

Consider the following to answer the question(s) :
An advocacy group is interested in determining if gender (1 = Female, 2 = Male) affects executive level salaries. They take a random sample of executives in three different industries: (1 = Consumer Goods, 2 = Financial, 3 = Health Care) . Salary data are collected. The two-way ANOVA results appear below.
-Which of the following statements is true?

A) This is an experiment.
B) This is an observational study.
C) This is a randomized block design.
D) This is an experimental study involving a randomized block design.
E) This is an observational study involving a randomized block design.