4. FreshLeaf is a commercial salad maker that produces “salad in a bag” that is sold at many local supermarkets. Its customers like lettuce but don’t care so much what type of lettuce is included in each bag of salad, so you would expect FreshLeaf’s demand for iceberg lettuce to be: LO16.4

a. Elastic.

b. Inelastic.

c. Unit elastic.

d. All of the above.