\( \lim_{x \to a} \frac{x^{9/2} - a^{9/2}}{x^{1/2} - a^{1/2}} = ? \)

A \( \frac{9}{2} a^{4} \)

B \( \frac{1}{2} a \)

C \( 9 a^{4} \)

D \( a^{4} \)

Solution

Correct Answer: Option C

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