I also faced problem in this question because in short run wages are rigid.
But question says according to schedules given in question, our
Wages and labour seems flexible like question 42 and 44. So aggregate supply may be vertical
In that case, if wages and prices are assumed to change and adjust accordingly it's a vertical line for sure. But, is it a kinda subtle approach, I mean the way they have asked the question? Have they given a cue somewhere in the question?