A passenger, sitting on a train and facing the engine at the front of the train, has a bowl of thin soup on the table in front of him. The train decelerates as it enters a station. Which sketch best represents the level of the soup in the bowl?
[Figure: Four different sketches A, B, C, D showing different soup levels in bowl]
A. [sketch A]
B. [sketch B]
C. [sketch C]
D. [sketch D]