连词用法举例...which one is correct,please?________ modeling business is by no means easy to ge

题目

连词用法举例...which one is correct,please?________ modeling business is by no means easy to ge
Which one is correct,why,please?有2种答案,A,B,请翻译你选择的答案.
________ modeling business is by no means easy to get into,the good model will always be in demand.
A.While B.Since C.As D.If

答案

A.while有“虽然”之意 翻译到此句里就是“虽然.,但是好的模特还是总会被需要的.”
B.since有“因为”之意,所以就是“因为...,所以好的模特一直被需要”