Answer:
No, If i were the sponser I'd not approve to change the scope.
Refer below for brief explanation.
Step-by-step explanation:
Very few projects are completed on a scope that is decided at the first time.
When i was working in Software house and was in the team of web development, I was responsible for the front end development. Unfortunately my client was the person whose scope changes every month and the result that lapse the time, requirements change, cost changes.