What is an implicit message in this transcript from a news radio program?

lee wu: welcome back to news time. i’m your host lee wu, and with me today is reporter anna andrews. welcome, anna. anna andrews: thank you, lee. it’s good to be here. lee wu: you’ve been following the debate over the port harbor bridge. can you tell us more about it? anna andrews: yes, lee. residents in the town of port harbor are divided over whether they should preserve the port harbor bridge. supporters of preserving the bridge say that it should be labeled a historical landmark, as it is the first suspension bridge built in the state. to protect the bridge, they’ve proposed that it become part of port harbor state park. opponents argue that preserving the bridge will be too expensive and that it may become a safety hazard in the future. they argue that the town should tear down the bridge and rebuild it instead. lee wu: thank you, anna.

a. some residents of port harbor have a fear of heights.
b. some residents of port harbor want to preserve the port harbor bridge.
c. the port harbor bridge is a source of debate for the town of port harbor.
d. the port harbor bridge cannot continue to be used for normal traffic.