Question ID:PT35 S1 Q10 Passage:Although marathons are 26.2 miles (42.2 kilometers) long and take even world-class marathoners over 2 hours to run, athletes who train by running 90 minutes a day fare better in marathons than do those who train by running 120 minutes or more a day. Stem:Each of the following, if true, contributes to an explanation of the difference in marathon performances described above EXCEPT: Correct Answer Choice:BChoice A:The longer the period of time that one runs daily, the greater the chances of suffering adverse health effects due to air pollution. Choice B:The longer the period of time that one runs daily, the easier it is to adjust to different race lengths. Choice C:The longer the run, the more frequent is the occurrence of joint injuries that significantly interfere with overall training. Choice D:Runners who train over 90 minutes per day grow bored with running and become less motivated. Choice E:Runners who train over 90 minutes per day deplete certain biochemical energy reserves, leaving them less energy for marathons.