It is advisable for salespeople to rely solely on trial orders.

The statement "It is advisable for salespeople to rely solely on trial orders" is False. Relying solely on trial orders can be risky for salespeople as it may not lead to long-term customer relationships. It is important for salespeople to build trust and establish a strong relationship with their customers, which can be achieved through consistent communication and providing quality products or services. While trial orders can be a good way to introduce a product or service to a potential customer, it should not be the only strategy used by salespeople. Therefore, the correct answer is B.