All of the Following Statements Describe an Advantage of Personal

All of the following statements describe an advantage of personal selling over other forms of promotion EXCEPT:

A) Personal selling is less expensive on a per contact basis.
B) Personal selling is better for providing customers with detailed demonstrations of products.
C) It is easier to vary the message according to what the customer needs to know with personal selling.
D) It is easier to direct the marketing effort to directly to qualified prospects with personal selling.
E) Personal selling costs can be controlled by adjusting the size of the sales force.