Read the following context and choose the best option to answer the question.
Context: I enjoyed the walking so much that I spent pretty much six hours straight walking on my last day there ( Amy had to leave earlier in the morning for home ) , which was all because I love the walking and NOT because I have a horrible sense of direction and got lost twice trying to find the Botanic Gardens . However , beyond all the eating , shopping , and walking , my favourite part of Singapore was actually riding the subway , known as the MRT . I like me some goodly efficient public transportation .
Question: What area of the world is the narrator in ?
Options: 
A. They are in Northern Europe .
B. They are in North America .
C. They are in Europe .
D. They are in Asia .


D