1. The correct answer is B. "You will greet yourself arriving". A paradox is a seemingly illogical, contradictory statement that is, in fact, true when you really think about it. In this case, the fact that you will greet yourself seems impossible and contradictory. But in fact, it is possible, and it is a profound image: you will greet your former self, your true self, that had been neglected. At the end of the day, when everyone is gone, you have to face yourself. That is the only way we get to really know ourselves.
2. The correct answer is A. Rediscovering one's true identity. The poem deals with identity, which is an ever-evolving concept of knowing ourselves. We make all sorts of decisions and live through many different phases. Whenever a phase in our lives is over, we are left with no other than ourselves, to recollect everything, to see who we were and who we are now, and to figure out a way to go on. During the process, we tend to lie to ourselves or conceive some important truths. But the mirror will show us our true selves if we are willing to "peel our own image" from it.