This question is regarding payment during checkout.
Say user already has 2 cards (Card A, Card B) in his wallet, and Card A is the default card.
During checkout he decided he wants to use Card C instead so he proceeds to add it. Once he has entered his card details and tap 'Add', where should the newly added card appear on the list of payment methods?
A. Appear top of the list, above the default card
B. Appear right below the default card
C. Appear according to payment processor (i.e. AMEX, MASTERCARD, VISA)