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If <a href="https://www.codecogs.com/eqnedit.php?latex=\inline&space;a^{x}" target="_blank"><img src="https://latex.codecogs.com/gif.latex?\inline&space;a^{x}" title="a^{x}" /></a> = b, <a href="https://www.codecogs.com/eqnedit.php?latex=\inline&space;b^{y}" target="_blank"><img src="https://latex.codecogs.com/gif.latex?\inline&space;b^{y}" title="b^{y}" /></a> = c and <a href="https://www.codecogs.com/eqnedit.php?latex=\inline&space;c^{z}" target="_blank"><img src="https://latex.codecogs.com/gif.latex?\inline&space;c^{z}" title="c^{z}" /></a> =a then the value of xyz is :

1. A 0
2. B 1
3. C <a href="https://www.codecogs.com/eqnedit.php?latex=\inline&space;\frac{1}{abc}" target="_blank"><img src="https://latex.codecogs.com/gif.latex?\inline&space;\frac{1}{abc}" title="\frac{1}{abc}" /></a>
4. D abc