Zend certified PHP/Magento developer

Point-of-sale (POS) has built-in gift card

A retail sells their products on their Magento Commerce site and in physical stores, they want to give customers the ability to purchase and use gift cards online or in-store, including cards which have already been sold through both channels.

Their in-store point-of-sale (POS) has built-in gift card capabilities and allows cards to be created or adjusted through an API.

Which three items must be included in the requirements for this project?
Choose 3 answers
1)Exiting Magento cards and balances must be imported into the POS
2)An additional payment method must be added to the Magento checkout
3)Existing in-store cards and balances must be imported Into Magento
4)Magento and the POS must share the same product catalog
5)Gift card records in Magento and the POS must be synchronized when any gift card transaction takes place

Any help on this question ?