Bootstrap 4 or bootstrap3 for the tribute page project?

I setting up my codepen page for my tribute project and one of the instructions is to change the setting in css to bootstrap, but the only bootstrap options i have are bootstrap4 or bootstrap3 the instructions just say bootstrap. which one should i pick?

I believe for the extent to which Bootstrap is covered in this course either would do-- But I would choose Bootstrap 4 in case you want to check the API for new/additional features and for maximum cross browser capability. You can always switch back the libraries if something isn’t working.

freeCodeCamp uses Bootstrap 3; however, I would suggest you use Bootstrap 4. You can check out the documentation or google if you run into a difference.

Thanks now i can start my project!

Thanks appreciate it