At the End of Week 10,this Project Has Cost $9,000

At the end of week 10,this project has cost $9,000 and has an earned value as indicated in the table.Use the data to calculate the cost performance index for the project.All amounts are in thousands of dollars. Duration (weeks)
$$\begin{array} { | l | l | l | l | l | l | l | } \hline & 5 & 10 & 15 & 20 & 25 & \% \text { Cornp } \\\hline \text { Conceptual desigri } & 10 & 6 & & & & 100 \% \\\hline \text { Craphics desigrl } & & 12 & 6 & 4 & & 30 \% \\\hline \text { Copyright } & & & 4 & 5 & 6 & 0 \% \\\hline \text { Barnples } & & & 4 & 2 & & 0 \% \\\hline \text { Toolirg } & & & 6 & 9 & 4 & 0 \% \\\hline \text { Production } & & & 2 & 6 & 14 & 0 \% \\\hline \text { Total } & 10 & 18 & 22 & 26 & 24 & \\\hline \text { Currulative } & 10 & 28 & 50 & 76 & 100 & \\\hline\end{array}$$

A) 2.5
B) 2.1
C) 1.8
D) 1.5