City A sold more newspapers than City B. As a result, residents of City A knew the world's events better than those of City B. If the following sentences are true, they can weaken the above conclusions, except for? ['City A has more population than City B.', 'Many residents of City B work in City A. so they buy newspapers in City A.', 'City A residents generally spend more time reading newspapers than City B residents.', "A City's weekly newspaper with local publishing rights."]