
This is a relatively common problem. The “Card Type” is completely unnecessary. Payment processors automatically route the transaction to the appropriate network.
Even worse are the implementations that will reject the form if you don’t select a type – adding friction at the exact moment someone wants to buy from you.
Incidentally ChatGPT doesn’t know the credit card numbering scheme. (Visa card numbers begin with 4; 3 is primarily American Express cards; Mastercard is 5.)

