The expansion of $\frac{1}{\sqrt{4 - 3x}}$ using the binomial theorem is valid if:
- A$x < 1$
- B$|x| < 1$
- C$-\frac{2}{\sqrt{3}} < x < \frac{2}{\sqrt{3}}$
- D$-\frac{4}{3} < x < \frac{4}{3}$
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