_The advantage(s) of incorporating the macro processor into pass 1 is/ are:$?

• A. many functions do not have to be implemented twice
• B. Functions are combined and it is not necessary to create intermediate files as output from the macro processor and input to the assembler
• C. more flexibility is available to the programmer in which he/she may use all the features of the assembler in conjunction with macros
• D. All of the above