Which sentence has correct pronoun-antecedent agreement?

a. the citizens of san francisco is proud of its wharf area.
b. the women outside the store waited impatiently for it to open so she could get inside.
c. i don't know if the firefighters who survived the tragedy will ever get over the loss of their fellow workers.
d. dan noticed that man in the trench coat slouched down in his seat, as though they were hoping to avoid being recognized.