https://www.youtube.com/watch?v=kN3AOMrnEUs
?
Relative to an external observer circle A revolves 4 times because circle A's centre is also rotating, relative to Circle B circle A revolves 3 times as circle A's centre is stationary. Clearly the answer is either 3 and 4, and in this case 3 is an acceptable choice as 4 is not presented.
>>7789746
That wasn't so dfficult, try harder next time