Answer:
the IAR should transfer the client to a more experienced IAR
Step-by-step explanation:
In this scenario, the IAR should transfer the client to a more experienced IAR. As a new IAR, you should not take on such a large client, especially not one that wants to invest aggressively. This is because you do not currently possess the required experience and the smallest mistake can cause your client millions. As an IAR your client's best interest should always be your main priority and this means refusing to accept the client if you cannot properly help them.