When multiple Scrum Teams are working on the same product, should all of their Increments...

According to the Scrum Guide, when multiple Scrum Teams are working on the same product, they should integrate their Increments every Sprint, in order to accurately inspect what is done and ensure that there is no technical debt or unfinished work at the end of each Sprint. The other options are not valid, as they imply that integration can be skipped, delayed, or done only for some teams, which is not consistent with Scrum values and principles.