When programs contain large amounts of data that must be accessed by functions, pointers to the data in functions are helpful because
A. they provide a way to access it.
B. they don’t require their own copy of data in the program.
C. the function can’t pass it to main().
D. main() doesn’t have a copy of data to pass to the function.
B. they don’t require their own copy of data in the program.
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