A structural engineer used a newly developed software for analysis and design. Later he found that the design is not safe due to software bug. It could cause the supporting columns to buckle. What should the engineer do?

• A. Destroy all evidence of the analysis.
• B. Tell the client to sue the software developer.
• C. Hire a good defense lawyer to defend action in case of failure or damage to structure.
• D. Disclose the problem to client and try to negotiate a way to reinforce the columns.