The definition of aide is "An aide is person who works as an ass

The definition of aide is "An aide is person who works as an assistant to someone with an important job, especially in government or armed forces". Such a definition is most likely to be found in______.
A、Longman Dictionary of Contemporary English(1987)
B、Collins COBUILD English Language Dictionary(1987)
C、A Chinese-English Dictionary(1995)
D、Oxford Dictionary of Current Idiomatic English(1975)
【正确答案】：B