A means that the average paycheck at this tenure is higher than the last one,but the argument is that the average paycheck in this city has been getting steadily bigger.so even if the average paycheck increased compared with last tenure,it cant support that the paycheck this tenure is getting bigger ,maybe at the first year of the tenure was very high,then declined .so a cant support the argument.
注意 A The average pay for jobs created in the city during the past three years was higher than the average pay for jobs created in the city earlier in Mayor Delmont’s tenure. Delmont执政之前3年创造的工作机会不一定高于city wide average因为我们并不知道这两者之间高低的关系 所以A不对