2. Consider the following subroutine SUB (this subroutine adds a data item passed to the subroutine to its local static RESULT variable): ORG $CFFF (Subroutine Data Section) RESULT FCB 0 ORG $D000 (Subroutine Executable Section) SUB TSX LDAP RESULT ADDA 2X SATTA RESULT SDY 0,X STY 1,X INS RTS A) (4 points) Name the parameter passing technique that is utilized (name both methods used: e. g.: call-by-value in register). call by value B) (6 points) Write the main program segment that will call SUB and pass DATA to the subroutine using the correct parameter passing technique (do not forget to initialize any crucial processor registers.) You may assume the following data section for your main program: ORG $B000 (Main Program Data Section) DATA EQU 10 ORG $C000 (Main Program Executable Section)