Optimal Asset Allocation for Growth

John is constructing an investment portfolio for a high-net-worth client who has expressed a preference for aggressive growth while also being aware of potential market volatility. The client has a long-term investment horizon of 15 years and a strong risk tolerance. John is evaluating different asset allocation strategies that would allow him to maximize returns while also considering the appropriate level of risk. Given the importance of balancing risk and reward, which of the following asset allocation strategies would best align with the client's objectives?