What is the slope of the tangent drawn from the point $(4, 10)$ to the parabola $y^2 = 9x$?
- A$\frac{1}{4}, \frac{3}{4}$
- B$\frac{1}{4}, \frac{9}{4}$
- C$\frac{1}{4}, \frac{1}{3}$
- DNone of these
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