Refer to the Scenario Below to Answer the Following Questions

Refer to the scenario below to answer the following questions.
Miller Meat Company contracts with several Midwestern farmers to raise beef and pork for its meat processing center. To guarantee freshness, Miller Meat Company relies on a vast distribution network. For delivery to local grocers in Indiana, Miller Meat uses its own fleet of refrigerated trucks; delivery to these Indiana grocers constitutes 65 percent of Miller Meat's business. For deliveries in Illinois, Wisconsin, and points directly west of the Mississippi River, Miller Meat Company contracts with a refrigerated fleet that specializes in expediting smaller shipments. For faster delivery during peak times, Miller Meat Company often uses its own trucks to deliver to the expedited fleet's consolidation point from its distribution warehouse in Indiana. During the holiday season, however, several specialty distributors contract with Miller Meat Company to package specialty meats in gift boxes, then ship them directly to the recipients. For these specialty shipments within Indiana, Illinois, and Wisconsin, Miller uses its normal delivery mode. For all other specialty shipments, Miller ships from its distribution warehouse via air, then contracts with expedited carriers in various cities to deliver to the recipients.
-In using air transportation and then expedited truck carriers to deliver specialty items to customers outside of a designated delivery range, Miller Meats is using ________.

A) all of its supply chain
B) a direct channel
C) indirect marketing
D) intermodal distribution
E) a vertical marketing system