Please write a complete MIPS assembly language programs for the following questions and print a hardcopy of your code to submit. 1. (10%) write a MIPS assembly program that reads three integers from keyboard and add them together. Then display the sum on screen. 2. (10%) write a MIPS assembly program that defines and initializes three integer variables A-20, B-30, and C-40 in memory. Read A, B, and C from memory and add them together. Then display the sum on screen. 3(10%) write a MIPS assembly program that defines three uninitialized integer variables A, B, and C in memory. Read three integers from keyboard and store them in A, B, and C, respectively