Single/multi-choice problem: Which of the following solutions is better for the following goal:
To purchase gasoline at a gas pump,

Select from the following. 1. insert your credit into the machine, wait for credit denial, then select the type of fuel you want and add gasoline to your vehicle.. 2. insert your credit into the machine, wait for credit approval, then select the type of fuel you want and add gasoline to your vehicle..
2.