What Would the Following Proposition Be in Standard Form? Barring

What would the following proposition be in standard form? Barring anything unexpected, you will live to be 82 years old.

A) If something unexpected happens, then you will live to be 82 years old.
B) If something unexpected happens, then you will not live to be 82 years old.
C) If nothing unexpected happens, then you will live to be 82 years old.
D) If you do not live to be 82 years old, then nothing unexpected happened.
E) If you live to be 82 years old, then nothing unexpected happened.