This Map Shows the Incidence of Lyme Disease in the United

This map shows the incidence of Lyme disease in the United States in 2012.Based on the map shown,which of the following statements is true?

A) Lyme disease exhibits geographical clusters in the Northeast.
B) A decrease in Lyme disease vaccinations led to an increase in Lyme disease incidence in 2012.
C) Lyme disease is maintained in a reservoir that is restricted to the Northeast.
D) The number of Lyme disease cases has been steadily increasing since the 1970s.