If the United Statesand the worldhas become a "salad bowl" of diverse ethnic, cultural, social, and locational groups, then one could say that:

a. consumer groups have blended to the extent that a marketer can not tell one consumer from another.

b. one-to-one marketing no longer works.

c. profitable customers are rapidly becoming a thing of the past.

d. because consumers are maintaining their diversity, they are forming themselves into consumer communities.