How do you balance what your boss wants, and what the client wants?! 😣

We had design and requirement discussions with clients and they said they want method A.

After doing internal design review and writing up documents, client agreed and sign off on it.

However, during last moments of development, I encountered a minor issue in the design and brought the team together to discuss about it.

Boss went on about how his idea, method B would have been better and is what the client wants, etc. Mind you, method B is quite different from method A that clients want.

I explained to boss that his method is different from what the client wants and also what have been documented and signed off.

He told me he doesn't need comments of such from me and they can always tell the client that method B is better and should be the way.

I feel so fucked because we are currently rushing with only 2 days left in our deadline and there will not be a bonus if we are late.