Mars uses Channel _______ for its chocolate products, while the Cocoa Exchange uses _______.

a.A (producer to consumers); D (producer to agents to wholesalers to retailers to consumers)

b.D (producer to agents to wholesalers to retailers to consumers); A (producer to consumers)

c.C (producer to wholesalers to retailers to consumers); A (producer to consumers)

d.C (producer to wholesalers to retailers to consumers); B (producer to retailers to consumers)

e.A (producer to consumers); C (producer to wholesalers to retailers to consumers)