Reading Comprehension (RC) | Re: During the 1920s, most advocates of scientific management, Frederick

Can Someone explain question no 4 and a little confusion in 3also?

4. According to the passage, the “reformers” (Highlighted) claimed that

A. neither scientific management nor reduced hours would result in an improvement in the working conditions of most workers
B. the impact that the routinization of work had on workers could be mitigated by a reduction in the length of their workweek
C. there was an inherent tension between the principles of scientific management and a commitment to reduced workweeks
D. scientific managers were more likely than other managers to use pay differentials to encourage higher productivity
E. reducing the length of the workweek would increase productivity more effectively than would increase inpay