This Figure Shows the Pattern of Short-Range and Long-Range Transportation

This figure shows the pattern of short-range and long-range transportation connections.Which of the following accurately describes the connection between these patterns and infectious diseases?

A) Areas with more connections tend to experience fewer disease outbreaks because people are exposed to more microbes.
B) Blood-borne pathogens tend to follow transportation routes,but respiratory infections do not.
C) The rapid introduction of pathogens from one area to another strongly correlates with modern travel routes.
D) Patterns of modern transportation routes strongly correlate with social inequality and host susceptibility.