Statement: Many people have expressed surprise as the princess has broken the royal tradition of marriage by choosing a commoner as her life partner.
Assumptions:
1. People expect royal families to observe customs and traditions.
2. People still value 'purity of royal blood' and 'status' when it comes to a marriage of members of royal family.
Answer: E
Since the princess' step has been taken by surprise, it is evident that she was not expected to marry a commoner but a person of equivalent 'status*. So, both I and II are implicit.