Why are the so few users left with versions 1.0 and 1.1? | Android

     A.    The first phones were released with version 1.5
     B.    1.0 and 1.1 had security holes that forced carriers to recall phones using them
     C.    1.0 and 1.1 are just number designations for the version Apple's iPhone is running
     D.    Everyone with 1.0 and 1.1 were upgraded to 1.5 over the air automatically

Ans: D