You and Your Exercise Buddy Decide to Go to Yosemite

You and your exercise buddy decide to go to Yosemite National Park to hike the famous El Capitan trail. You book your trip through a well known agency but before you leave for your vacation, you learn that there have been two cases of plague reported in people who recently visited a different area of the park. Your friend is anxious and tells you he thinks that plague is really dangerous and kills people everyone who gets it. He points out that this disease killed a lot of people during the Middle Ages, and says he doesn't want to do the trip after all. You decide to do some research on the plague and its causative agent before making a decision about your trip.
-Please select the False statement regarding arthropod vectors.

A) Mechanical vectors simply transfer a pathogen from one surface to another.
B) Biological vectors play an essential role in the life cycle of the pathogen.
C) Arthropods are very specific and always bite only one type of host.
D) The incidence of vector-borne diseases can be decreased by controlling the vector or the infected hosts.
E) Some arthropods cause disease even when they do not act as a vector.