She___her hairstyle in her hometown before she came to Chongqing for a better job.A.would change\x05B.has changed\x05C.changed\x05D.was changing虽然之前有人问过也有人回复过,但是不能让我信服.本人疑惑的地方在改变发型

She___her hairstyle in her hometown before she came to Chongqing for a better job.A.would change\x05B.has changed\x05C.changed\x05D.was changing虽然之前有人问过也有人回复过,但是不能让我信服.本人疑惑的地方在改变发型
She___her hairstyle in her hometown before she came to Chongqing for a better job.
A.would change\x05B.has changed\x05C.changed\x05D.was changing
虽然之前有人问过也有人回复过,但是不能让我信服.
本人疑惑的地方在改变发型确实发生在来重庆找个好工作之前,有明显的先后顺序,为什么还要选changed呢?
Thank you so much~

She___her hairstyle in her hometown before she came to Chongqing for a better job.A.would change\x05B.has changed\x05C.changed\x05D.was changing虽然之前有人问过也有人回复过,但是不能让我信服.本人疑惑的地方在改变发型
因为其他三个都不对.
would change 表将来,不合适
has changed 现在完成时显然不对,至少应该是 had changed,过去完成时才行
was changing 表示过去正在发生的事,显然本句不是这个意思.
可以信服吗?或者还有什么疑点,说出来.