Here's a problem to solve: A town in northern Arkansas experienced colder than normal temperatures during part of the winter. Which change was most likely responsible for this?

Among the 4 following options, which is the correct answer?

- A: A southward dip in the jet stream
 
- B: A northward movement of the jet stream
 
- C: The Coriolis effect creating a low pressure area
 
- D: The Coriolis effect creating a high pressure area
 