You Have Just Returned Home After Being Away on Vacation

Multiple Choice

You have just returned home after being away on vacation for several weeks. Your body had adjusted to the different time zone you were in, which was eight hours ahead of your local time at home. You slept for 8 hours on the flight back and it is now just a few minutes before midnight local time as you walk in your front door. Now that you are back home, what factor could make readjusting to your usual time zone less difficult?

A) if your trip was West of where you live (and you flew East to get home)
B) if your trip was East of where you live (and you flew West to get home)
C) if you have seasonal affective disorder (SAD)
D) if you are a shift worker
E) if you are blind