“Jill’s been working in a large company for years and has never enjoyed it. She always has a headache and a stomachache from the stress.” is most close to the meaning of ( )

A、It seems that she has to work harder. ;
B、It seems that she is ill.;
C、It sounds like she’s tired of the rat race(激烈竞争的环境). Maybe she needs to move to the country and get a low-stress job.;
D、It seems that she enjoyed the present job.