How much time should you prepare for a meeting with your client?

A$.$

Spend twice as much time preparing for each call as you would spend in the presence of a customer

B$.$

Spend $30$ minutes preparing for each call as you would spend in the presence of a customer

C$.$

Spend $1$ hour preparing for each call as you would spend in the presence of a customer

D$.$

Spend four times as much time preparing for each call as you would spend in the presence of a customer