Correcting incorrect move operations

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Hi all, Any one got an idea for answer for the below question. I'm sure on A and B. Needs to know the remaining two with an explanation

A production Operator is executing work order in your plant. After completing move transactions, he notices that he has performed some incorrect move operations,

including incorrect scrap and reject transactions. He is required to perform a reverse transaction to correct the errors. The operations are not count point enabled

and not auto charged.

Identify the four transactions to correct this situation.

A. Reverse from reject to ready.

B. Reverse from scrap to ready.