In the context of the steps before a sales presentation, which of the following is stated by a rule of thumb?

Multiple choice question.

A fruitful sales process does not include a trial close.

Salespeople engage in practices such as backdoor selling before making a sales presentation to build their customers' trust on them.

A good sales process includes $20$ percent presentation, $40$ percent preparation, and $40$ percent follow$-$up$,$ particularly when selling large accounts.

Selling happens even if salespeople do not prospect.