please answer with correct and detailed calculations and explanations. make sure supporting statements are also provided for each step and calculation.

1. Use the data to calculate the earned value for the project. All amounts are in thousands of dollars. Duration (weeks) 15 10 15 20 25 % Comp Conceptual design 10 -16 100% Graphics design 12 6 4 75% -~ Copyright 4 15 6 5% Samples 4 12 25% Tooling 16 19 4 10% Production 2 6 14 10% Total 10 18 22 26 24 Cumulative 10 28 50 76 100 O a. $43,250 O b. $100,000 O c. $72,345 O d. $38,850