Please choose the correct ending to complete the given sentence: Finance and Business: [header] How to buy bitcoins with a credit card [title] Download bitcoin core or blockchain if you want a free, popular option. [step] Desktop software wallets such as bitcoin core and blockchain are popular and easy to use. Register to receive a unique wallet address, then download the software onto your computer.

Ending1: [title] Request bitcoin core or blockchain to purchase. [step] If you are using the ssenet version of bitcoin, you are entitled to the free wallet with the bitcoin 73 characters registration code. Ending2: [substeps] If you want to transfer a bitcoin root file onto a credit card, go to https: // bitcoin-goo-. Net/providers/bitcoin-core/and click the button " continue " to complete the registration process. Ending3: [substeps] You can download these and other wallet options at https: // bitcoin. Org/en/choose-your-wallet. Ending4: [title] Read the terms and conditions for the features that are offered and also for the date. [step] Buy bitcoin + on u.s.

Answer format: ending1/ending2/ending3/ending4