Scenario: Upex is a company that designs and manufactures eyeglasses and sunglasses. The marketing manager at Upex suggests three segmentation strategies. The first target market is described as follows: Students aged $18-25$ who study in the Northwestern US$.$ Which segmentation approaches are used in this scenario?

a$.$

Psychographic

b$.$

Demographic and geographic

c$.$

Demographic

d$.$

Demographic and psychographic

e$.$

Geographic