请教黄皮OG 38

companies O and P each have the same number of employees who work the same number of hours per week. according to records maintained by each company, the employees of company O had fewer job-related accidents last year than did the employees of company P. therefore, employees of company O are less likely to have job-related accidents than are employees of company P.

which if the following, if true, would most weaken the conclusion above?

A ..   the employees of company P lost more time at work due to job-related accidents than did the employees of company O

B ..   company P considered more types of accidents to be job-related than did company O

C ..   the employees of company P were sick more often than were the employees of company O

D ..   several employees of company O wach had more than one job-related accidents

E ..   the majority of job-related accidents ata company O involved a single machine.

答案选B 不懂B是怎么削弱题目的，请NN指教

LS的意思可以理解P标准严格?   P认定成事故,而O就不认定成事故了?

跟2楼想说的一样

3楼理解正确的。