Match the Following Steps in Microsoft's Development of Windows 7

Match the following steps in Microsoft's development of Windows 7 to their respective WBS level. Step Level
$\begin{array}{lc}\text { Step } & \text { Level } \\\text { Develop Windows 10 OS } & ? \\\text { System Testing } & ? \\\text { Compatible with } 8 \text { OS } & ? \\\text { Develop GUI's } & ? \\\text { Module Testing } & ?\end{array}$

A) Level 1, Level 2, Level 4, Level 3, Level 3
B) Level 1, Level 2, Level 3, Level 4, Level 5
C) Level 0, Level 1, Level 2, Level 3, Level 4
D) Level 0, Level 2, Level 2, Level 3, Level 3
E) Level 0, Level 1, Level 1, Level 2, Level 3