Which one of the following statements is correct?

Options

A. Cold fronts move at slower rate than warm fronts and therefore cannot overtake the warm fronts.
B. Cold fronts normally move faster than warm fronts and therefore frequently overtake the warm fronts.
C. Cold fronts move at slower rate, and eventually they are overtaken by the warm fronts.
D. Cold fronts move faster than warm fronts but they cannot overtake the warm fronts.