Which of the Following Strategies Leads to an Effective Sales

Which of the following strategies leads to an effective sales presentation?​

A) ​Retaining the product offering being proposed even if it is different from buyer's needs
B) Giving equal importance to all the attributes irrespective of their importance weights​
C) ​Altering the buyer's beliefs about the proposed offerings when the buyer underestimates the product
D) ​Avoiding calling attention to neglected attributes
E) ​Refraining from altering the buyer's beliefs about the competitor's offerings even when the buyer overestimates the competitor's product