D. 6530 circular mils
Work
Given a wire with a diameter of 80.81 mils, we are asked to find the CMA which is equivalent to D².
Knowing that, we can square the diameter to obtain the CMA.
CMA = D²
D = 80.81
CMA = (80.81)²
CMA = 6530.2561
round to nearest whole number
6530.2561 ---> 6530
Thus, D would be the most fitting option.
