If the numerator of certain fraction increased by 100% and the denominator is increased by 200% the new fraction thus formed is $$\frac{4}{21}$$ What is the original fraction ?

If the numerator of certain fraction increased by 100% and the denominator is increased by 200% the new fraction thus formed is $$\frac{4}{21}$$ What is the original fraction ?
1). $$\frac{2}{7}$$
2). $$\frac{3}{7}$$
3). $$\frac{2}{5}$$
4). $$\frac{4}{7}$$

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