Moderate# Vector in the Unit Vector Notation

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Vector $\vec{u}$ is in the second quadrant and $\vec{u} \cdot \vec{u}=6$. The vector makes an angle of ${45}^{o}$ with respect to the negative x-axis.

Which of the following represents vector $\vec{u}$ written through unit vectors $\hat{i}$ and $\hat{j}$?