What is the standard command for a modem to answer?

What is the standard command for a modem to answer?

• AT DT
• AT A
• A/
• AT Z 

 

EXPLANATION

Modem Command strings are prefixed with "AT" to get the modem's "attention".  A is the code for "Answer".  This typically requires no Carriage Return to follow, as that is interpreted by the
modem as a cancellation.  AT Z resets the modem, AT DT Dials touch tone (usually the default dialing method), and A/ repeats the last command.

SOURCE

https://en.wikipedia.org/wiki/Hayes_command_set