Alan Visits a Shopping Mall in His Neighborhood

Alan visits a shopping mall in his neighborhood. He recollects his lessons from a marketing class and attempts to relate them to his observations at the mall. Which of Alan's interpretations is most accurate?

A) Alan believes that Tie World, a shop that exclusively sells ties, has a wide product mix.
B) Alan believes that The Corner Store, a shop that sells everything from baby rattles and potting soil to contact lens cleaning solution, has a narrow product mix and deep product lines.
C) Alan believes that The Giga-store, a shop that sells hundreds of self-help books, novels, and religious-themed music CDs, has a narrow and shallow product mix.
D) Alan believes that Ming's Corner, a shop that sells thirty-six different kinds of muffins, has a narrow and deep product mix.