Re: #4
UCB does (A) for engineering majors, but (B) for L&S majors which are capped/impacted/oversubscribed (e.g. psychology, economics, L&S computer science, statistics, art practice) as well as business (students need to apply to the business division in their second year; admission includes other criteria in addition to courses/grades/GPA). Yes, students entering UCB L&S enter as undeclared.