The evolution of customer relationship marketing has progressed from
a. Mass, target, customer, to one-to-one marketing
b. One-to-one, mass, target, to customer marketing
c. Customer, mass, target, to one-to-one marketing
d. Mass, target, one-to-one, to customer marketing
e. Customer relationship marketing has always existed
a. Mass, target, customer, to one-to-one marketing
b. One-to-one, mass, target, to customer marketing
c. Customer, mass, target, to one-to-one marketing
d. Mass, target, one-to-one, to customer marketing
e. Customer relationship marketing has always existed