Based on the following UML notation, which one of the following statements is NOt true

$\backslash$table$[[$Circle$],[-$radius: double$],[-$numberOfObjects: int$],[+$Circle$()],[+$Circle$($radius: double$)],[+$getRadius$()$: double$],[+$setRadius$($radius: double$)$: void$],[+$getNumberOfObjects$()$: int$],[+$getArea$()$: double$]]$

A$.$ public double getArea$()\{\}$

B$.$ public Circle$($double radius$)\{\}$

C$.$ public void setRadius$($double radius$)\{\}$