If a + b + c = 0, then a3 + b3 + c3 is equal to?

Answer: Option D

$$\begin{array}{rl}& \text{If }a+b+c=0\\ & \text{then,}\\ & a^3+b^3+c^3-3abc=0\\ & \iff a^3+b^3+c^3=3abc\end{array}$$