ATM stands for Automated Teller Machine, not 'Automatic Teller Machine' as claimed. However, in common usage, both 'Automatic' and 'Automated' are accepted. The claimed answer B is the most widely recognized expansion. Option A has 'money' instead of 'Machine'. Option C has 'Advance' instead of 'Automatic'. Option D has 'advance taking money' which is nonsensical.