What happens next in this paragraph?

People are snowboarding between two fences in a small hall going down a small slope. People are standing in a snowy mountain in snowboards. People are eating sitting outside a tent. people
Select from the following.
A). are in a driven mountain.
B). are snowboarding up the slope.
C). are snwoboarding going down a snowy slope ad doing tricks in mountains.
D). are snowboarding with an orchestra.
C).