Solution
Given, $$x + y + z = 0$$ and $$xyz = 5$$
When $$x+y+z=0$$, then $$x^3+y^3+z^3=3xyz$$
$$\Rightarrow$$ $$x^3+y^3+z^3=3\left(5\right)$$
$$\Rightarrow$$ $$x^3+y^3+z^3=15$$
Hence, the correct answer is Option B
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