Which Molecule Will React Faster with Br₂ in the Presence

Which molecule will react faster with Br₂ in the presence of iron bromide and why?

A) A because the amino group makes the ring more negative through charge delocalization
B) B because the nitro group makes the ring more negative through charge delocalization
C) A because the amino group makes the ring less negative through charge delocalization
D) B because the nitro group makes the ring less negative through charge delocalization