When (7777 + 77) is divided by 78, the remainder is:

Answer: Option C

$$\begin{array}{rl}& \frac{{77}^{77}+77}{78}\\ & ={\left(-1\right)}^{77}+\left(-1\right)\\ & =-1-1\\ & =-2\\ & \text{Remainder}=78-2=76\end{array}$$