Question 3 (25 marks) A programmer intends to write a program to perform subtraction between two numbers. The first number stored in the addresses 0x10 to 0x13 will be subtracted from the second number stored in the address 0x20 to 0x23. The result is to be stored in the address 0x30 to 0x33. The logic flow of the program is illustrated in the flowchart below: Start WREG[0x20] 0x30 ? [0x10] -[WREGI WREG[0x21] 0x31[0x11] [WREG] - B WREG[0x22] 0x32 ? [0x12] -[WREGI-B WREG