If x = -1, then the value of 1x^99 + 1x^98 + 1x^97 + 1x^96 + 1x^95 + 1x^94 + 1/x - 1 is?

Answer: Option C

$$\frac{1}{x^{99}}\text{ + }\frac{1}{x^{98}}+\frac{1}{x^{97}}+\frac{1}{x^{96}}+\frac{1}{x^{95}}+\frac{1}{x^{94}}+\frac{1}{x}-1$$
  $$=\frac{1}{{\left(-1\right)}^{99}}\text{ + }\frac{1}{{\left(-1\right)}^{98}}+\frac{1}{{\left(-1\right)}^{97}}+\frac{1}{{\left(-1\right)}^{96}}+$$         $$\frac{1}{{\left(-1\right)}^{95}}+$$   $$\frac{1}{{\left(-1\right)}^{94}}+$$   $$\frac{1}{\left(-1\right)}-$$   $$1$$
$$\begin{array}{rl}& =-1+1-1+1-1+1+\frac{1}{-1}-1\\ & =-2\end{array}$$