Answer:
the lawyer should Inform Mr. X through that Tax attorney and ABC management to get approval.
Explanation:
According to my research on different lawyer proceedings, I can say that based on the information provided within the question before taking Paula's Case the lawyer should Inform Mr. X through that Tax attorney and ABC management to get approval. This can be said because since both Mr.X and Paula are clients of the law firm, there may be a breach in confidentiality if the lawyer decides to take Paula's case. Therefore he needs to talk to everyone involved and place restrictions if the case is taken.
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.