Question: The PIC18F4321 microcontroller is required to add two 3-bit numbers stored in the lowest 3 bits of data registers 0x20 and 0x21 and output the sum (not to exceed 9) to a common-cathode seven-segment display connected to Port C as shown in Figure. Write a PIC18F assembly language program at address 0x200 to accomplish this by using a look-up table.