问XDF语法题

The growth of the railroads led to the abolition of local times, which was determined by when the sun reached the observer' s meridian and differing from city to city, and to establishment of reginal times.

A. which was determined by when the sun reached the observer' s meridian and differing

B. which was determined by when the sun reached the observer' s meridian and which differed

C. which were determined by when the sun reached the observer' s meridian and differing

D. determined by when the sun reached the observer' s meridian and differed

E. determined by when the sun reached the observer' s meridian and differing

答案是E, differing和reached并列修饰times, 但形式不一致啊?

reach 修饰 sun

determined   differering修饰times