Everybody likes to work with ------ is reliable and easy to

因为 B 是主格,但这里要求用宾格作work with和get on with的宾语.应该选A.
Everybody likes to work with whom is reliable and easy to get on with.
意思是：
“谁都愿意和靠得住又容易友好相处的人一道工作.”
我觉得不该选C：whomever .逻辑上说不通.因为并非whomever 都是reliable and easy to get on with.的.
例如：
It doesn’t interest me where or what or with whom you have studied.
你在哪里受的教育,学的什么以及与谁为师我不感兴趣.