In which way(s) a macro processor for assembly language can be implemented:

A independent two-pass processor
B independent one-pass processor
C processor incorporated into pass 1 of a standard two-pass assembler
D all of the above
E None of the above

Correct Answer: all of the above

A macro processor is a program that copies a stream of text from one place to another, making a systematic set of replacements as it does so. Macro processors are often embedded in other programs, such as assemblers and compilers. Sometimes they are standalone programs that can be used to process any kind of text.
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A independent two-pass processor
B independent one-pass processor
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