MIPS Archetiecture

How did they get the answer DEF?

Suppose we have some address in register $a0. What is printed by the following code? Note, the ASCII value for 'C' is base 10 67 or hex 43. move $tO, $a0 sb $t1, 0 ($t0) addiu $t0, 1 addi $t 1, 1 sb $t1, 0($t0) addiu $t0, 1 addi $t1, 1 sb $t1,0 ($t0) li $t1,0x0a sb $t1, 0($t0) li $v0, 4 syscall DEF a. Suppose x is an integer variable with the value 68. What is printed by the following C statement