What construction does the image below demonstrate?
A An equilateral triangle circumscribed about a circle
B An equilateral triangle inscribed in a circle
C The circumcenter of an equilateral triangle
D The incenter of an equilateral triangle
![What construction does the image below demonstrate A An equilateral triangle circumscribed about a circle B An equilateral triangle inscribed in a circle C The class=](https://us-static.z-dn.net/files/dd2/f90df25121eed2cec47826222f57a6b8.png)