![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-53/ti_inject-812ce.png)
Each of the following sentences contains ONE mistake. Find it out and correct it. Jack was washing dishes then Mary knocked at the door and entered.
A.
Jack was washing dishes as Mary knocked at the door and entered.
B.
Jack was washing dishes while Mary knocked at the door and entered.
C.
Jack was washing dishes when Mary knocked at the door and entered.
D.
Jack was washing dishes as soon as Mary knocked at the door and entered.