Scooby and Shaggy Are Being Chased by a Scary Ghost

Scooby and Shaggy are being chased by a scary ghost. In the stress of their escape, they may be more prone to functional fixedness. Such an example would be if

A) Shaggy perceives that he has no control over their escape.
B) Shaggy dwells on the potential dangers if they are caught.
C) Scooby thinks of their escape as a challenge rather than a problem.
D) Scooby doesn't think to use a chair to barricade a door with no lock.