Answer:
<h2>Required set will be :-</h2><h3>(9,15)</h3>
B, because you can't get the square root of a negative number
The answer is definitely B
Ok the diameter would be 0.000000024cm
because 1.2 x 0.00000001 = 0.000000012
that is the radius so we multiply by 2 to get the diameter
0.000000012 x 2 = 0.000000024
