Unit vector of \( 4 \hat{\mathbf{i}}-3 \hat{\mathbf{j}}+\hat{\mathbf{k}} \) is (a) \( \hat{\math...

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Unit vector of \( 4 \hat{\mathbf{i}}-3 \hat{\mathbf{j}}+\hat{\mathbf{k}} \) is
(a) \( \hat{\mathbf{i}}-\hat{\mathbf{j}}+\hat{\mathbf{k}} \)
(b) \( \sqrt{26} \hat{\mathbf{i}}-\sqrt{26} \hat{\mathbf{j}}+\sqrt{26} \hat{\mathbf{k}} \)
(c) \( \frac{4 \hat{\mathbf{i}}-3 \hat{\mathbf{j}}+\hat{\mathbf{k}}}{\sqrt{26}} \)
(d) \( 5 \hat{\mathbf{i}}-4 \hat{\mathbf{j}}+5 \hat{\mathbf{k}} \)
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