Which of the following is true when implementing a one-to-many relationship?A. The file on the many end has a concatenated key of its primary key and the one end key. B. The file on the many end has a foreign key consisting of the primary key on the one end. C. The file on the one end has a foreign key consisting of the primary key of the many end. D. The file on the one end has a concatenated key of its primary key and the many end key.

What is the item which could be matched with a statement below? software installed on a computer that produces pop-up ads using your browser an example of social engineering malware loads itself before the os boot is complete type of spyware that tracks your keystrokes, including passwords windows key + l the practice of tricking people into giving out private information or allowing unsafe programs into the network or computer when someone who is unauthorized follows the employee through a secured entrance to a room or building a type of malware that tricks you into opening it by substituting itself for a legitimate program a computer that has been hacked, and the hacker is using the computer to run repetitive software in the background without the user's knowledge an infestation designed to copy itself repeatedly to memory, on drive space, or on a network