Ali's vendor discovered some issues that may escalate the vendor's cost and timelines. What is the best way to proceed forward?

Thanks for invitation - 

With the choice - B .

thanks for invition ,,,,,,,,,, my choice is option B

My opinion is the right answer is: B

My opinion is that the right answer is:

D. Vendor should, anyway do the additional work and invoice it to the client(Ali's Organization)

I prefer to leave answers to Experts. Thanks for Your kind Invitation.

if the issues are included in SOW optionD

if not B.