Which of the following is most likely true about proof statements?

A) Survey results from magazines are invalid proof statements.
B) Proof statements can substantiate a salesperson's product claims.
C) Past sales records are weak proof statements and infrequently used.
D) Company proof results are the most credible type of proof statements.
E) Proof statements encourage two-way communication with customers.

Proof statements can be used by salespeople to support their claims about a product's effectiveness or reliability. Survey results from magazines (A) may not be considered credible by all customers, and past sales records (C) may not necessarily be relevant to a customer's current needs. While company proof results (D) are often considered reliable, they may not be the most credible in every situation. Proof statements can encourage communication with customers (E), but this is not directly related to their credibility as evidence.