Which of these is the incorrect explanation of the Android SDK and AVD Manager?

Which of these is the incorrect explanation of the Android SDK and AVD Manager?
A . They are provided from version 1.6 of the SD
B . Up to Version 1.5, there was an AVD Manager but it lacked SDK management functions.
C . You can create and startup AVD, and on startup you can delete user data up to that point.
D . The "android" command can be used if "<SDK install folder>/tools" is added to the command path.
E . The development tools that can be downloaded from Android SDK and AVD Manager are SDK Android platform, NDK-platform, emulator images, and USB drivers for handsets.

Answer: D