The following 16-bit words are loaded at (unspecified) address D. The PC is set to address D and instructions are executed until the point indicated by the comment. a) After the code reaches the end of the code (the last comment), what bits are held in R1? And in R2? And in R3? b) Lines 1-4 initialize the input registers, while lines 5-8 generate the output of the function, and store the result in register R2. What Boolean function is this code trying to implement? Specifically, identify the two input registers and the Boolean function implemented: