CS Interview Question:

Consider the following in context with the CVV or Card security code of an ATM or Credit Card:
1.Magnetic Stripe
2.Front of the in embossed or printed digits
3.Back of the card as a separate group of 3 digits to the right of the signature strip At which among the above locations CVV or Card Security Code of an ATM is found?

[A] 1 & 2
[B] 2 & 3
[C] 1 & 3
[D] None of These