Drivers Arrive at a Toll Booth at a Rate of 3

Multiple Choice

Drivers arrive at a toll booth at a rate of 3 per minute during peak traffic periods. The time between consecutive driver arrivals follows an exponential distribution. What is the probability that takes more than 1/3 of a minute between consecutive drivers?

A) 0.632
B) 0.111
C) 0.368
D) 0.632.
E) Not enough information given