An online bank is a virtual bank, that deals with people. This type of banks are used for personal as well as business purposes. The person has to correctly update all his information to operate the bank. Such banks are good in today's time as one can operate everything from his home and one does not have to wait in long queues. But the problem with these banks is that, they do not have deposit locations. One has to transfer money in these accounts from other accounts and usually these type of accounts have deposit and withdrawal limits set, to prevent cyber crimes.
Hence, option D- Lack of deposit locations is the correct answer.