In Which of These Situations Is Personal Selling More Likely

In which of these situations is personal selling more likely to be used than other methods of sales communication?

A) where routine information has to be provided to customers
B) where profitability is dependent on the scale and cost effectiveness of operation
C) where the product is inexpensive and simple
D) where the salesperson has to stimulate a trial to make a sale
E) where the organization wants to create product awareness