Tornados Are Classified in Several Ways $P l=2 \log (L)+1$ Where L Is the Length of the Tornado's Path in Fujita

Multiple Choice

Tornados are classified in several ways.A tornado's classification on the Fujita Scale as F1 through F5 is most commonly cited.Another classification of tornados is by path length, given by the formula $P l=2 \log (L) +1$
where L is the length of the tornado's path in miles.The Binger, Oklahoma tornado of 1981 was an F4 (originally thought to be an F5) whose path was 16 miles in length.What was its Pl classification?

A) P1
B) P2
C) P3
D) P4
E) P5