Which of the following rules should a salesperson adopt in order to have more productive lunch periods?

A) Monitor the time to avoid monopolizing too much of the buyer's day.
B) Have an alcoholic drink only if the client makes the suggestion.
C) Conduct part of the sales presentation during lunch using a laptop.
D) When lunching alone, use the time to read something relaxing.
E) Offer to purchase the customer a lunchtime cocktail or dessert.

Monitoring the time allows for the salesperson to be respectful of the buyer's time and not take up too much of their day. This can lead to a more productive lunch period and a better chance of securing a sale in the future. The other choices may be inappropriate or unprofessional in certain situations, such as conducting a sales presentation during a social lunch or offering an alcoholic drink without considering the buyer's preferences or workplace policies.