AAP did not respond to Election Commisions's challenge

Election commission of India has challenged all political parties to prove that EVMs can be tempered. AAP who has demonstrated to media that mock EVM's can be tempered with failed to respond to the challenge. It is because AAP can't prove EVMs  can be tempered but just want to declare that election process which result is defeat of AAP is a fraud. AAP demonstrated tempering on look alike of EVMs and not real EVM machines. So their claim is not trustworthy. When Election Commission want them to prove that real EVMs can be tempered, they don't respond. It is just because they don't have any facts but just a propaganda.