Um B? not really sure only one would say is B doesn't sound like it would because of organization
It's not illegal, but never have them on while driving unless you need to warn drivers behind you of a hazard or you're carrying something like for example: On freeways there are some semis and regular trucks who are hauling something/s and need to warn people that it's hazardous or to be careful when passing
B)after peak oil,oil production and supply will decrease,but demand will increase
