Extra pop up for polls with solutions or explainers

e.g. What is the expression 2^2^3 / 4 evaluated as in R?

A. 2
B. 16
C. 64 ✅
D. 256

```
# This would be the pop up
R evaluates exponentiation from right to left:

2^(2^3) / 4
= 2^8 / 4
= 256 / 4
= 64
```

Start by locating the poll rendering entry point and how answer solutions are represented. Use the provided exponentiation example as the expected popup content, and consider the work done when polls with solutions or explainers display that additional explanation clearly.

Written by the indexing model from the issue text.