Which of the Following Statements Is True About Databases Whether

Which of the following statements is true about databases whether used on mainframes, midrange computers, networks, or personal computers?

A) The theory and structure are substantially the same, but the design and management issues are different.
B) The theory, structure, and design are substantially the same, but the management issues are different.
C) The theory, structure, design, and management issues are substantially the same.
D) The theory, structure, design, and management issues are different.