1. LEGv8 coding (a) Find at least five different ways to assign 0 to register X4. (b) For the following C statement, write the corresponding LEGv8 assembly code. Assume that the C variables a, b, and c, have already been placed in registers XO, X1, and X2 respectively. Use a minimal number of LEGv8 assembly instructions. a = (b + c)- 15: (c) For the following C statement, write a minimal sequence of LEGv8 assembly instructions that performs the identical operation. Assume X8 = A and X12 is the base address of the array C. A= C[2]