Which rule is used to determine that which fracture-line has occurred before the second one?

Autopsy was performed on a case of accidental death which shows two linear parietal fractures joining in midline.Which rule is used to determine that which fracture-line has occurred before the second one?

A. Young’s rule
B. Puppe’s rule
C. Ashley’s rule
D. Mc Naughten’s rule

Ans:B. Puppe’s rule