Note: Arc Simulator program is located in the shared drive with path 'Program Files\ArcTools ArcTools'. In addition, the ArcTool requires an added empty line at the bottom of the code to assemble. PART 1: 1. Please add comments for each line. a. Explain what the program intends to do. b. Assemble the code by hand. 2. Run the program through the simulator 3. What is the content of %r4 after this program is executed? dstart .equ Program 1 ! Hint: op3 for subcc is 010100 .begin .org 2048 4000 Id [a], %r1 ld [b], %r2 ld [C], %r3 addcc %r2, %r3, %ro addcc %r1, %ro, %r4 subcc %r2, %r4, %r2 st %ro, [a] st jmpl %r15 + 4, %ro .org dstart a: 15 b: 54 C: -29 y: 0 .end %r2, [y]