What is the area of a circle with a diameter of 10

answer choices:
a: 100pie
b: 50pie
c: 40pie
d: 25pie
e: 5pie

It would be D because the formula is: pi r^2

A=pir^2
d/2=r
d=10
d/2=10/2=5
a=pi5^2
a=pi25
a=25pi

D is answer

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.