Managing Acceleration Original Schedule Before Project Start

Project Status as of 22 Nov 2014

Owner has directed the Contractor to accelerate the works so as to finish according to Project Completion ( 30 Dec 2014)

3 days reduction in Activity G

Is it possible to accelerate on Activity C??

Activity Cost per Day vs Possible Days to be accelerated ABCDEFGHI

Activity Cost per day$5K$10K$6K$500 $5K$2K$1K$500 $2K

Estimated day to accelerate222221322

Question: Identify the activities for the most cost effective way to accelerate works.