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Which statement correctly distinguishes a worm from a Trojan?
A
A worm encrypts user files and demands payment, while a Trojan only displays unwanted advertising.
B
A worm must attach itself to an existing host file, while a Trojan spreads only through infected boot sectors.
C
A worm copies itself to other systems across a network on its own, while a Trojan must be launched by a user who believes it is legitimate software.
D
A worm runs only in system memory, while a Trojan always requires administrative rights before it can run at all.