999\,1/7 + 9992/7 + 9993/7 + 9994/7 + 9995/7 + 9996/7 is simplified to-

Answer: Option A

$$999\frac{1}{7}+999\frac{2}{7}+999\frac{3}{7}+$$     $$999\frac{4}{7}+$$   $$999\frac{5}{7}+$$   $$999\frac{6}{7}$$
$$\Rightarrow \left(999\times 6\right)+$$   $$\left(\frac{1}{7}+\frac{2}{7}+\frac{3}{7}+\frac{4}{7}+\frac{5}{7}+\frac{6}{7}\right)$$
$$\begin{array}{rl}& \Rightarrow 5994+\left(\frac{21}{7}\right)\\ & \Rightarrow 5994+3\\ & \Rightarrow 5997\end{array}$$