Which sentence is expressed correctly?
A - Because the focus of her business had shifted, she filed for a DBA so that her business's name could more closely reflect the services she was now providing.
B - Because the focus of her business had shifted, she filed for a D.B.A. so that her business's name could more closely reflect the services she was now providing.
C - Because the focus of her business had shifted, she filed for a D. B. A. so that her business's name could more closely reflect the services she was now providing.