What is the difference between RU486 and “Plan B”? (Points : 1)

Question

RU486 cannot prevent pregnancies that have already occurred while “Plan B” can.
RU486 prevents eggs from fertilizing while “Plan B” works to destroy the embryo.
RU486 and “Plan B” can both eliminate current pregnancies.
RU 486 induces the abortion of fertilized embryos while “Plan B” prevents eggs from being fertilized.
None of the above

Answer 1

http://contraception.about.com/b/2009/02/02/ru486-vs-plan-b.htm