What happens next in this paragraph?

How to activate a visa credit card 
Call the activation number. 
When you receive your new credit card in the mail, it should have a sticker on the front that will explain how to activate it by either calling a phone number or going to a website. Locate the number and dial it using your phone.
Select from:
[A]. You can also use your country's code to activate your card. The code will resemble the following code on a jfp model : 7-09-7982-7966..
[B]. Ordinarily, the phone number will be a toll-free number, such as an 800 number. Depending upon your card issuer, you may only be able to call at certain times, such as during regular business hours..
[C]. If the number is busy or retains the same information regularly, call a representative on the phone who might be able to help you. Click on " start credit card " to activate the card..
[D]. A dial screen screen will appear on your screen and remind you to activate your card. Some prepaid cards come with an expiration date..
[B].