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For a complex number z mathop lim limits text z to...

This question belongs to Engineering Maths Complex Variable
Complex Variable
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For a complex number z, $$\mathop {\lim }\limits_{{\text{z}} \to {\text{i}}} \frac{{{{\text{z}}^2} + 1}}{{{{\text{z}}^3} + 2{\text{z}} - {\text{i}}\left( {{{\text{z}}^2} + 2} \right)}}$$     is

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Correct Answer: Option D
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