Segment d1

is a diameter of ⨀A
and segment d2
is a diameter of ⨀B.
Two circles, A and B, with diameters d sub 1 and d sub 2 as described in the problem. Circle B has a larger diameter than circle A.If CA
denotes the circumference of ⨀A
and CB
denotes the circumference of ⨀B,
which equation is true?