With ATMs It Is Possible to Retrieve Cash from the Bank

Multiple Choice

With ATMs it is possible to retrieve cash from the bank at any time.One hundred years ago,one could only get cash from the bank during business hours,say,9 am to 3 pm.The difference is because

A) flexibility was not valued 100 years ago.
B) it was impossible to provide 24 hour a day service 100 years ago.
C) the cost of providing 24 hour a day service is much lower today.
D) government forced banks to become more convenient.
E) the value of money has increased in the past century.